use crate::DbPool;
use crate::api::ClientVersion;
use crate::providers::{
    Provider, build_proxy_url, report_provider_error, report_provider_error_background,
    requester_or_default, strip_url_scheme,
};
use crate::status::*;
use crate::util::cache::VideoCache;
use crate::util::parse_abbreviated_number;
use crate::util::time::parse_time_to_seconds;
use crate::videos::{ServerOptions, VideoFormat, VideoItem};
use async_trait::async_trait;
use chrono::{Duration as ChronoDuration, Utc};
use error_chain::error_chain;
use futures::stream::{self, StreamExt};
use htmlentity::entity::{ICodedDataTrait, decode};
use percent_encoding::{NON_ALPHANUMERIC, percent_decode_str, utf8_percent_encode};
use regex::Regex;
use scraper::{Html, Selector};
use serde::Deserialize;
use serde_json::Value;
use std::collections::{HashMap, HashSet};
use std::sync::{Arc, RwLock};
use std::thread;
use std::time::Duration as StdDuration;
use tokio::time::timeout;

pub const CHANNEL_METADATA: crate::providers::ProviderChannelMetadata =
    crate::providers::ProviderChannelMetadata {
        group_id: "live-cams",
        tags: &["archive", "cams", "recordings"],
    };

error_chain! {
    foreign_links {
        Io(std::io::Error);
        Json(serde_json::Error);
    }
    errors {
        Parse(msg: String) {
            description("parse error")
            display("parse error: {}", msg)
        }
    }
}

const BASE_URL: &str = "https://archivebate.com";
const CHANNEL_ID: &str = "archivebate";
const FIREFOX_UA: &str =
    "Mozilla/5.0 (X11; Linux x86_64; rv:146.0) Gecko/20100101 Firefox/146.0";
const HTML_ACCEPT: &str =
    "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8";

const PLATFORM_SHORTCUTS: &[(&str, &str)] = &[
    ("chaturbate", "Y2hhdHVyYmF0ZQ=="),
    ("stripchat", "c3RyaXBjaGF0"),
    ("camsoda", "Y2Ftc29kYQ=="),
    ("cam4", "Y2FtNA=="),
    ("bongacams", "Ym9uZ2FjYW1z"),
    ("onlyfans", "b25seWZhbnM="),
    ("twitch", "dHdpdGNo"),
    ("youtube", "eW91dHViZQ=="),
    ("instagram", "aW5zdGFncmFt"),
    ("tiktok", "dGlrdG9r"),
];

const GENDER_SHORTCUTS: &[(&str, &str)] = &[
    ("female", "ZmVtYWxl"),
    ("couple", "Y291cGxl"),
    ("male", "bWFsZQ=="),
    ("trans", "dHJhbnM="),
];

#[derive(Debug, Clone)]
pub struct ArchivebateProvider {
    url: String,
    filters: Arc<RwLock<Vec<FilterOption>>>,
    uploaders: Arc<RwLock<Vec<FilterOption>>>,
}

#[derive(Debug, Clone)]
enum Target {
    Home,
    Platform {
        id: String,
        title: String,
    },
    Gender {
        id: String,
        title: String,
    },
    Profile {
        username: String,
        platform: Option<String>,
        gender: Option<String>,
    },
}

#[derive(Debug, Deserialize, Clone)]
struct SearchResponse {
    #[serde(default)]
    data: Vec<SearchProfile>,
}

#[derive(Debug, Deserialize, Clone)]
struct SearchProfile {
    #[serde(default)]
    username: String,
    #[serde(default)]
    platform: Option<String>,
    #[serde(default)]
    gender: Option<String>,
}

#[derive(Debug, Clone)]
struct LivewireInitialData {
    component: String,
    method: String,
    fingerprint_json: String,
    server_memo_json: String,
}

#[derive(Debug, Clone)]
struct ResolvedMixdropMedia {
    media_url: String,
    embed_url: String,
}

impl ArchivebateProvider {
    pub fn new() -> Self {
        let provider = Self {
            url: BASE_URL.to_string(),
            filters: Arc::new(RwLock::new(Self::build_default_filters())),
            uploaders: Arc::new(RwLock::new(vec![FilterOption {
                id: "all".to_string(),
                title: "All".to_string(),
            }])),
        };
        provider.spawn_initial_load();
        provider
    }

    fn spawn_initial_load(&self) {
        let provider = self.clone();
        thread::spawn(move || {
            let runtime = match tokio::runtime::Builder::new_current_thread()
                .enable_all()
                .build()
            {
                Ok(runtime) => runtime,
                Err(error) => {
                    report_provider_error_background(
                        CHANNEL_ID,
                        "spawn_initial_load.runtime_build",
                        &error.to_string(),
                    );
                    return;
                }
            };

            runtime.block_on(async move {
                let options = ServerOptions {
                    featured: None,
                    category: None,
                    sites: None,
                    filter: None,
                    language: None,
                    public_url_base: None,
                    requester: None,
                    network: None,
                    stars: None,
                    categories: None,
                    duration: None,
                    sort: Some("new".to_string()),
                    sexuality: None,
                };
                if let Err(error) = provider.refresh_uploaders_from_home(&options).await {
                    report_provider_error_background(
                        CHANNEL_ID,
                        "spawn_initial_load.refresh_uploaders",
                        &error.to_string(),
                    );
                }
            });
        });
    }

    fn build_default_filters() -> Vec<FilterOption> {
        let mut filters = vec![FilterOption {
            id: "all".to_string(),
            title: "All".to_string(),
        }];

        for (title, id) in GENDER_SHORTCUTS {
            filters.push(FilterOption {
                id: format!("gender:{id}"),
                title: format!("Gender: {}", Self::title_case(title)),
            });
        }

        for (title, id) in PLATFORM_SHORTCUTS {
            filters.push(FilterOption {
                id: format!("platform:{id}"),
                title: format!("Platform: {}", Self::title_case(title)),
            });
        }

        filters
    }

    fn build_channel(&self, _clientversion: ClientVersion) -> Channel {
        let filters = self
            .filters
            .read()
            .map(|value| value.clone())
            .unwrap_or_default();
        let uploaders = self
            .uploaders
            .read()
            .map(|value| value.clone())
            .unwrap_or_default();

        Channel {
            id: CHANNEL_ID.to_string(),
            name: "ArchiveBate".to_string(),
            description: "ArchiveBate cam recording feeds with platform/gender/profile shortcuts and yt-dlp compatible watch URLs.".to_string(),
            premium: false,
            favicon: "https://www.google.com/s2/favicons?sz=64&domain=archivebate.com".to_string(),
            status: "work in progress".to_string(),
            categories: filters.iter().skip(1).map(|value| value.title.clone()).collect(),
            options: vec![
                ChannelOption {
                    id: "sort".to_string(),
                    title: "Sort".to_string(),
                    description: "Browse ArchiveBate newest uploads.".to_string(),
                    systemImage: "list.number".to_string(),
                    colorName: "blue".to_string(),
                    options: vec![FilterOption {
                        id: "new".to_string(),
                        title: "Latest".to_string(),
                    }],
                    multiSelect: false,
                },
                ChannelOption {
                    id: "filter".to_string(),
                    title: "Shortcuts".to_string(),
                    description: "Direct platform and gender archive routes.".to_string(),
                    systemImage: "tag.fill".to_string(),
                    colorName: "green".to_string(),
                    options: filters,
                    multiSelect: false,
                },
                ChannelOption {
                    id: "sites".to_string(),
                    title: "Uploaders".to_string(),
                    description: "Profile shortcuts discovered from latest listings.".to_string(),
                    systemImage: "person.crop.square".to_string(),
                    colorName: "purple".to_string(),
                    options: uploaders,
                    multiSelect: false,
                },
            ],
            nsfw: true,
            cacheDuration: Some(900),
        }
    }

    fn selector(value: &str) -> Result<Selector> {
        Selector::parse(value)
            .map_err(|error| Error::from(format!("selector `{value}` parse failed: {error}")))
    }

    fn regex(value: &str) -> Result<Regex> {
        Regex::new(value).map_err(|error| Error::from(format!("regex `{value}` parse failed: {error}")))
    }

    fn decode_text(text: &str) -> String {
        decode(text.as_bytes())
            .to_string()
            .unwrap_or_else(|_| text.to_string())
            .replace('\u{a0}', " ")
            .trim()
            .to_string()
    }

    fn collapse_whitespace(text: &str) -> String {
        text.split_whitespace().collect::<Vec<_>>().join(" ")
    }

    fn absolute_url(&self, value: &str) -> String {
        if value.starts_with("http://") || value.starts_with("https://") {
            return value.to_string();
        }
        if value.starts_with("//") {
            return format!("https:{value}");
        }
        format!(
            "{}/{}",
            self.url.trim_end_matches('/'),
            value.trim_start_matches('/')
        )
    }

    fn normalize_title(value: &str) -> String {
        let mut normalized = String::new();
        let mut last_space = true;
        for character in value.chars().flat_map(|character| character.to_lowercase()) {
            if character.is_alphanumeric() {
                normalized.push(character);
                last_space = false;
            } else if !last_space {
                normalized.push(' ');
                last_space = true;
            }
        }
        normalized.trim().to_string()
    }

    fn title_case(value: &str) -> String {
        let mut chars = value.chars();
        let Some(first) = chars.next() else {
            return String::new();
        };
        let mut out = first.to_uppercase().to_string();
        out.push_str(chars.as_str());
        out
    }

    fn html_headers(&self, referer: &str) -> Vec<(String, String)> {
        vec![
            ("Referer".to_string(), referer.to_string()),
            ("User-Agent".to_string(), FIREFOX_UA.to_string()),
            ("Accept".to_string(), HTML_ACCEPT.to_string()),
            ("Accept-Language".to_string(), "en-US,en;q=0.9".to_string()),
        ]
    }

    fn search_headers(&self, referer: &str) -> Vec<(String, String)> {
        vec![
            ("Referer".to_string(), referer.to_string()),
            ("User-Agent".to_string(), FIREFOX_UA.to_string()),
            (
                "Accept".to_string(),
                "application/json, text/javascript, */*; q=0.01".to_string(),
            ),
            ("Accept-Language".to_string(), "en-US,en;q=0.9".to_string()),
            ("X-Requested-With".to_string(), "XMLHttpRequest".to_string()),
        ]
    }

    fn build_target_url(&self, target: &Target, page: u16) -> String {
        let page = page.max(1);
        match target {
            Target::Home => {
                if page <= 1 {
                    format!("{}/", self.url)
                } else {
                    format!("{}/?page={page}", self.url)
                }
            }
            Target::Platform { id, .. } => {
                if page <= 1 {
                    format!("{}/platform/{id}", self.url)
                } else {
                    format!("{}/platform/{id}?page={page}", self.url)
                }
            }
            Target::Gender { id, .. } => {
                if page <= 1 {
                    format!("{}/gender/{id}", self.url)
                } else {
                    format!("{}/gender/{id}?page={page}", self.url)
                }
            }
            Target::Profile { username, .. } => {
                if page <= 1 {
                    format!("{}/profile/{username}", self.url)
                } else {
                    format!("{}/profile/{username}?page={page}", self.url)
                }
            }
        }
    }

    fn canonical_uploader_id(username: &str) -> String {
        format!(
            "{CHANNEL_ID}:{}",
            utf8_percent_encode(username, NON_ALPHANUMERIC)
        )
    }

    fn username_from_uploader_id(value: &str) -> Option<String> {
        let suffix = match value.split_once(':') {
            Some((channel, suffix)) if channel.eq_ignore_ascii_case(CHANNEL_ID) => suffix,
            _ => return None,
        };
        percent_decode_str(suffix)
            .decode_utf8()
            .ok()
            .map(|value| value.into_owned())
            .and_then(|value| (!value.trim().is_empty()).then_some(value))
    }

    fn target_from_shortcut(&self, value: &str) -> Option<Target> {
        let trimmed = value.trim();
        if trimmed.is_empty() || trimmed.eq_ignore_ascii_case("all") {
            return None;
        }

        if let Some(username) = Self::username_from_uploader_id(trimmed) {
            return Some(Target::Profile {
                username,
                platform: None,
                gender: None,
            });
        }

        if let Some(username) = trimmed.strip_prefix("profile:") {
            let username = username.trim();
            if !username.is_empty() {
                return Some(Target::Profile {
                    username: username.to_string(),
                    platform: None,
                    gender: None,
                });
            }
        }

        if let Some(id) = trimmed.strip_prefix("platform:") {
            if let Some((name, _)) = PLATFORM_SHORTCUTS.iter().find(|(_, known_id)| *known_id == id) {
                return Some(Target::Platform {
                    id: id.to_string(),
                    title: Self::title_case(name),
                });
            }
        }

        if let Some(id) = trimmed.strip_prefix("gender:") {
            if let Some((name, _)) = GENDER_SHORTCUTS.iter().find(|(_, known_id)| *known_id == id) {
                return Some(Target::Gender {
                    id: id.to_string(),
                    title: Self::title_case(name),
                });
            }
        }

        let normalized = Self::normalize_title(trimmed);
        if let Some((name, id)) = PLATFORM_SHORTCUTS
            .iter()
            .find(|(name, _)| Self::normalize_title(name) == normalized)
        {
            return Some(Target::Platform {
                id: (*id).to_string(),
                title: Self::title_case(name),
            });
        }

        if let Some((name, id)) = GENDER_SHORTCUTS
            .iter()
            .find(|(name, _)| Self::normalize_title(name) == normalized)
        {
            return Some(Target::Gender {
                id: (*id).to_string(),
                title: Self::title_case(name),
            });
        }

        if let Some(option) = self.find_uploader_option(trimmed) {
            if let Some(username) = option.id.strip_prefix("profile:") {
                return Some(Target::Profile {
                    username: username.to_string(),
                    platform: None,
                    gender: None,
                });
            }
        }

        None
    }

    fn resolve_option_target(&self, options: &ServerOptions) -> Target {
        if let Some(value) = options.sites.as_deref() {
            if let Some(target) = self.target_from_shortcut(value) {
                return target;
            }
        }
        if let Some(value) = options.filter.as_deref() {
            if let Some(target) = self.target_from_shortcut(value) {
                return target;
            }
        }
        Target::Home
    }

    fn find_uploader_option(&self, value: &str) -> Option<FilterOption> {
        let normalized = Self::normalize_title(value);
        self.uploaders
            .read()
            .ok()?
            .iter()
            .find(|option| {
                option.id.eq_ignore_ascii_case(value)
                    || Self::normalize_title(&option.title) == normalized
            })
            .cloned()
    }

    fn upsert_uploader_option(&self, username: &str) {
        let trimmed = username.trim();
        if trimmed.is_empty() {
            return;
        }
        let option = FilterOption {
            id: format!("profile:{trimmed}"),
            title: trimmed.to_string(),
        };
        let Ok(mut uploaders) = self.uploaders.write() else {
            return;
        };
        if uploaders
            .iter()
            .any(|value| value.id.eq_ignore_ascii_case(option.id.as_str()))
        {
            return;
        }
        uploaders.push(option);
    }

    fn parse_watch_id(url: &str) -> Option<String> {
        let regex = Regex::new(r"/watch/(?P<id>[0-9]+)").ok()?;
        regex
            .captures(url)
            .and_then(|captures| captures.name("id").map(|value| value.as_str().to_string()))
    }

    fn is_allowed_detail_watch_url(url: &str) -> bool {
        let Some(parsed) = url::Url::parse(url).ok() else {
            return false;
        };
        if parsed.scheme() != "https" {
            return false;
        }
        let Some(host) = parsed.host_str() else {
            return false;
        };
        (host == "archivebate.com" || host == "www.archivebate.com")
            && parsed.path().starts_with("/watch/")
    }

    fn proxied_video(options: &ServerOptions, detail_url: &str) -> String {
        if detail_url.is_empty() || !Self::is_allowed_detail_watch_url(detail_url) {
            return String::new();
        }

        build_proxy_url(options, CHANNEL_ID, &strip_url_scheme(detail_url))
    }

    fn parse_duration(text: &str) -> u32 {
        let Ok(regex) = Self::regex(r"([0-9]{1,2}:[0-9]{2}(?::[0-9]{2})?)") else {
            return 0;
        };
        let Some(captures) = regex.captures(text) else {
            return 0;
        };
        let Some(value) = captures.get(1) else {
            return 0;
        };
        parse_time_to_seconds(value.as_str()).unwrap_or(0) as u32
    }

    fn parse_views(value: &str) -> Option<u32> {
        let lowered = value.to_lowercase();
        let cleaned = lowered.replace("views", "").trim().to_string();
        parse_abbreviated_number(&cleaned)
    }

    fn parse_uploaded_at(value: &str) -> Option<u64> {
        let text = value.trim().to_lowercase();
        if text.is_empty() {
            return None;
        }
        if text == "just now" {
            return Some(Utc::now().timestamp() as u64);
        }

        let regex =
            Regex::new(r"^([0-9]+)\s+(second|minute|hour|day|week|month|year)s?\s+ago$").ok()?;
        let captures = regex.captures(&text)?;
        let amount = captures.get(1)?.as_str().parse::<i64>().ok()?;
        let unit = captures.get(2)?.as_str();
        let now = Utc::now();
        let parsed = match unit {
            "second" => now - ChronoDuration::seconds(amount),
            "minute" => now - ChronoDuration::minutes(amount),
            "hour" => now - ChronoDuration::hours(amount),
            "day" => now - ChronoDuration::days(amount),
            "week" => now - ChronoDuration::weeks(amount),
            "month" => now - ChronoDuration::days(amount * 30),
            "year" => now - ChronoDuration::days(amount * 365),
            _ => return None,
        };
        Some(parsed.timestamp() as u64)
    }

    fn extra_tags_for_target(target: &Target) -> Vec<String> {
        match target {
            Target::Platform { title, .. } => vec![title.clone()],
            Target::Gender { title, .. } => vec![title.clone()],
            Target::Profile { platform, gender, .. } => {
                let mut tags = Vec::new();
                if let Some(platform) = platform.as_ref().filter(|value| !value.trim().is_empty()) {
                    tags.push(platform.trim().to_string());
                }
                if let Some(gender) = gender.as_ref().filter(|value| !value.trim().is_empty()) {
                    tags.push(gender.trim().to_string());
                }
                tags
            }
            Target::Home => Vec::new(),
        }
    }

    fn parse_video_items(&self, html: &str, target: &Target, limit: usize) -> Result<Vec<VideoItem>> {
        let document = Html::parse_fragment(html);
        let item_selector = Self::selector("section.video_item")?;
        let watch_selector = Self::selector("a[href*='/watch/']")?;
        let uploader_selector = Self::selector("div.info a[href*='/profile/']")?;
        let info_selector = Self::selector("div.info p")?;
        let duration_selector = Self::selector("div.duration span")?;
        let video_selector = Self::selector("video[poster]")?;
        let source_selector = Self::selector("video source[src]")?;

        let base_tags = Self::extra_tags_for_target(target);
        let mut items = Vec::new();

        for element in document.select(&item_selector) {
            let Some(watch_link) = element.select(&watch_selector).next() else {
                continue;
            };
            let Some(watch_href) = watch_link.value().attr("href") else {
                continue;
            };
            let watch_url = self.absolute_url(watch_href);
            let Some(video_id) = Self::parse_watch_id(&watch_url) else {
                continue;
            };

            let duration_text = element
                .select(&duration_selector)
                .next()
                .map(|value| Self::decode_text(&Self::collapse_whitespace(&value.text().collect::<String>())))
                .unwrap_or_default();
            let duration = Self::parse_duration(&duration_text);

            let thumb = element
                .select(&video_selector)
                .next()
                .and_then(|value| value.value().attr("poster"))
                .map(|value| self.absolute_url(value))
                .unwrap_or_default();
            if thumb.is_empty() {
                continue;
            }

            let preview = element
                .select(&source_selector)
                .next()
                .and_then(|value| value.value().attr("src"))
                .map(|value| self.absolute_url(value));

            let uploader_element = element.select(&uploader_selector).next();
            let uploader_name = uploader_element
                .as_ref()
                .map(|value| Self::decode_text(&value.text().collect::<String>()))
                .filter(|value| !value.is_empty());
            let uploader_url = uploader_element
                .as_ref()
                .and_then(|value| value.value().attr("href"))
                .map(|value| self.absolute_url(value));
            let uploader_id = uploader_name
                .as_ref()
                .map(|value| Self::canonical_uploader_id(value));

            let info_text = element
                .select(&info_selector)
                .next()
                .map(|value| Self::decode_text(&Self::collapse_whitespace(&value.text().collect::<String>())))
                .unwrap_or_default();
            let info_parts = info_text
                .split('·')
                .map(|value| value.trim())
                .filter(|value| !value.is_empty())
                .collect::<Vec<_>>();

            let uploaded_at = info_parts.first().and_then(|value| Self::parse_uploaded_at(value));
            let platform = info_parts.get(1).map(|value| value.trim().to_string());
            let views = info_parts.get(2).and_then(|value| Self::parse_views(value));

            let title = match (uploader_name.as_deref(), platform.as_deref()) {
                (Some(uploader), Some(platform)) => format!("{uploader} on {platform}"),
                (Some(uploader), None) => format!("{uploader} on ArchiveBate"),
                _ => format!("ArchiveBate video {video_id}"),
            };

            let mut tags = base_tags.clone();
            if let Some(platform) = platform.as_ref().filter(|value| !value.trim().is_empty()) {
                tags.push(platform.clone());
            }
            let mut unique = HashSet::new();
            let mut deduped = Vec::new();
            for tag in tags {
                let normalized = Self::normalize_title(&tag);
                if normalized.is_empty() || unique.contains(&normalized) {
                    continue;
                }
                unique.insert(normalized);
                deduped.push(tag);
            }

            let mut item = VideoItem::new(
                video_id,
                title,
                watch_url,
                CHANNEL_ID.to_string(),
                thumb,
                duration,
            );
            item.uploader = uploader_name.clone();
            item.uploaderUrl = uploader_url;
            item.uploaderId = uploader_id;
            item.uploadedAt = uploaded_at;
            item.views = views;
            item.tags = (!deduped.is_empty()).then_some(deduped);
            item.preview = preview;

            if let Some(uploader) = uploader_name {
                self.upsert_uploader_option(&uploader);
            }

            items.push(item);
            if items.len() >= limit {
                break;
            }
        }

        Ok(items)
    }

    fn parse_mixin_packed_eval(html: &str) -> Option<String> {
        let eval_regex = Regex::new(
            r#"(?s)eval\(function\(p,a,c,k,e,d\)\{.*?\}\('(?P<payload>.*?)',\s*(?P<radix>[0-9]+),\s*(?P<count>[0-9]+),\s*'(?P<tokens>.*?)'\.split\('\|'\)"#,
        )
        .ok()?;
        let captures = eval_regex.captures(html)?;
        let payload_raw = captures.name("payload")?.as_str();
        let radix = captures.name("radix")?.as_str().parse::<u32>().ok()?;
        let count = captures.name("count")?.as_str().parse::<usize>().ok()?;
        if !(2..=36).contains(&radix) {
            return None;
        }

        let payload = Self::unescape_js_single_quoted(payload_raw);
        let tokens_raw = captures.name("tokens")?.as_str();
        let tokens = tokens_raw.split('|').collect::<Vec<_>>();
        let mut unpacked = payload;

        for index in (0..count).rev() {
            let Some(token) = tokens.get(index) else {
                continue;
            };
            if token.is_empty() {
                continue;
            }
            let key = Self::to_radix(index, radix);
            let pattern = format!(r"\b{}\b", regex::escape(&key));
            let re = Regex::new(&pattern).ok()?;
            unpacked = re.replace_all(&unpacked, *token).into_owned();
        }

        Some(unpacked)
    }

    fn unescape_js_single_quoted(value: &str) -> String {
        let mut output = String::with_capacity(value.len());
        let mut chars = value.chars();
        while let Some(character) = chars.next() {
            if character != '\\' {
                output.push(character);
                continue;
            }
            let Some(next) = chars.next() else {
                break;
            };
            match next {
                '\\' => output.push('\\'),
                '\'' => output.push('\''),
                '"' => output.push('"'),
                'n' => output.push('\n'),
                'r' => output.push('\r'),
                't' => output.push('\t'),
                _ => output.push(next),
            }
        }
        output
    }

    fn to_radix(mut value: usize, radix: u32) -> String {
        if value == 0 {
            return "0".to_string();
        }
        let alphabet = b"0123456789abcdefghijklmnopqrstuvwxyz";
        let mut out = Vec::new();
        while value > 0 {
            let digit = value % radix as usize;
            out.push(alphabet[digit] as char);
            value /= radix as usize;
        }
        out.iter().rev().collect()
    }

    fn extract_mixdrop_media_url(html: &str) -> Option<String> {
        let direct_regex = Regex::new(r#"MDCore\.wurl\s*=\s*"([^"]+)""#).ok()?;
        if let Some(url) = direct_regex
            .captures(html)
            .and_then(|captures| captures.get(1).map(|value| value.as_str().to_string()))
        {
            return Some(Self::normalize_possible_protocol_relative(&url));
        }

        let unpacked = Self::parse_mixin_packed_eval(html)?;
        let unpacked_regex = Regex::new(r#"MDCore\.wurl\s*=\s*"([^"]+)""#).ok()?;
        unpacked_regex
            .captures(&unpacked)
            .and_then(|captures| captures.get(1).map(|value| value.as_str().to_string()))
            .map(|value| Self::normalize_possible_protocol_relative(&value))
    }

    fn normalize_possible_protocol_relative(value: &str) -> String {
        let trimmed = value.trim();
        if trimmed.starts_with("//") {
            format!("https:{trimmed}")
        } else {
            trimmed.to_string()
        }
    }

    fn host_from_url(url: &str) -> Option<String> {
        let parsed = url::Url::parse(url).ok()?;
        parsed.host_str().map(|value| value.to_ascii_lowercase())
    }

    fn is_mixdrop_host(url: &str) -> bool {
        let Some(host) = Self::host_from_url(url) else {
            return false;
        };
        host.contains("mixdrop") || host.contains("m1xdrop")
    }

    fn download_fid_from_detail_html(html: &str) -> Option<String> {
        let document = Html::parse_document(html);
        let selector = Selector::parse("input[name='fid'][value]").ok()?;
        document
            .select(&selector)
            .next()
            .and_then(|node| node.value().attr("value"))
            .map(str::trim)
            .filter(|value| !value.is_empty())
            .map(ToOwned::to_owned)
    }

    fn mixdrop_embed_url_from_download_url(url: &str) -> Option<String> {
        let parsed = url::Url::parse(url).ok()?;
        let host = parsed.host_str()?;
        let host_lc = host.to_ascii_lowercase();
        if !host_lc.contains("mixdrop") && !host_lc.contains("m1xdrop") {
            return None;
        }

        let mut segments = parsed.path_segments()?.filter(|segment| !segment.is_empty());
        let kind = segments.next()?.to_ascii_lowercase();
        if kind != "e" && kind != "f" {
            return None;
        }
        let media_id = segments.next()?.trim();
        if media_id.is_empty() {
            return None;
        }

        Some(format!("{}://{host}/e/{media_id}", parsed.scheme()))
    }

    fn video_format_with_headers(
        format: VideoFormat,
        headers: Vec<(String, String)>,
    ) -> VideoFormat {
        if headers.is_empty() {
            return format;
        }

        let header_map: HashMap<String, String> = headers
            .into_iter()
            .filter_map(|(key, value)| {
                let key = key.trim().to_string();
                let value = value.trim().to_string();
                if key.is_empty() || value.is_empty() {
                    return None;
                }
                Some((key, value))
            })
            .collect();

        if header_map.is_empty() {
            return format;
        }

        let mut value = match serde_json::to_value(&format) {
            Ok(value) => value,
            Err(_) => return format,
        };

        if let Value::Object(object) = &mut value {
            let Ok(headers_value) = serde_json::to_value(header_map) else {
                return format;
            };
            object.insert("http_headers".to_string(), headers_value);
            if let Ok(updated) = serde_json::from_value::<VideoFormat>(value) {
                return updated;
            }
        }

        format
    }

    fn first_video_source_from_html(html: &str) -> Option<String> {
        let document = Html::parse_document(html);
        let source_selector = Selector::parse("video source[src]").ok()?;
        let video_src_selector = Selector::parse("video[src]").ok()?;

        if let Some(value) = document
            .select(&source_selector)
            .next()
            .and_then(|node| node.value().attr("src"))
        {
            return Some(value.to_string());
        }
        document
            .select(&video_src_selector)
            .next()
            .and_then(|node| node.value().attr("src"))
            .map(|value| value.to_string())
    }

    fn first_iframe_source_from_html(html: &str) -> Option<String> {
        let document = Html::parse_document(html);
        let iframe_selector = Selector::parse("iframe[src]").ok()?;
        document
            .select(&iframe_selector)
            .next()
            .and_then(|node| node.value().attr("src"))
            .map(|value| value.to_string())
    }

    async fn resolve_mixdrop_media_from_iframe(
        &self,
        iframe_url: &str,
        referer: &str,
        options: &ServerOptions,
    ) -> Option<ResolvedMixdropMedia> {
        let mut requester = requester_or_default(options, CHANNEL_ID, "resolve_mixdrop_media");
        let response = requester
            .get_raw_with_headers_timeout(
                iframe_url,
                self.html_headers(referer),
                Some(StdDuration::from_secs(6)),
            )
            .await
            .ok()?;
        if !response.status().is_success() {
            return None;
        }
        let iframe_html = response.text().await.ok()?;
        let media_url = Self::extract_mixdrop_media_url(&iframe_html)?;
        Some(ResolvedMixdropMedia {
            media_url,
            embed_url: iframe_url.to_string(),
        })
    }

    async fn enrich_video(&self, item: VideoItem, options: &ServerOptions) -> VideoItem {
        let page_url = item.url.clone();
        let format_url = Self::proxied_video(options, &page_url);
        if format_url.is_empty() {
            return item;
        }

        let mut format = VideoFormat::new(format_url, "source".to_string(), "mp4".to_string());
        let mut requester = requester_or_default(options, CHANNEL_ID, "archivebate.enrich_video");
        if let Ok(detail_html) = requester
            .get_with_headers(
                &page_url,
                self.html_headers(&format!("{}/", self.url)),
                Some(wreq::Version::HTTP_11),
            )
            .await
        {
            let mut mixdrop_embed_url = Self::first_iframe_source_from_html(&detail_html)
                .map(|value| self.absolute_url(&value))
                .filter(|value| Self::is_mixdrop_host(value));

            if mixdrop_embed_url.is_none() {
                mixdrop_embed_url = Self::download_fid_from_detail_html(&detail_html)
                    .map(|value| self.absolute_url(&value))
                    .and_then(|value| Self::mixdrop_embed_url_from_download_url(&value));
            }

            if let Some(embed_url) = mixdrop_embed_url {
                format = Self::video_format_with_headers(
                    format,
                    vec![
                        ("Referer".to_string(), embed_url),
                        ("User-Agent".to_string(), FIREFOX_UA.to_string()),
                    ],
                );
            }
        }

        let mut enriched = item;
        enriched.formats = Some(vec![format]);
        enriched
    }

    fn extract_csrf_token(html: &str) -> Option<String> {
        let regex = Regex::new(r#"<meta name="csrf-token" content="([^"]+)""#).ok()?;
        regex
            .captures(html)
            .and_then(|captures| captures.get(1).map(|value| value.as_str().to_string()))
    }

    fn decode_livewire_json_attr(raw: &str) -> Option<String> {
        let decoded = Self::decode_text(raw);
        (!decoded.trim().is_empty()).then_some(decoded)
    }

    fn livewire_method(component: &str) -> Option<&'static str> {
        match component {
            "home-videos" => Some("loadVideos"),
            "filter.platform" => Some("load_platform_videos"),
            "profile.model-videos" => Some("load_profile_videos"),
            _ => None,
        }
    }

    fn extract_json_object(source: &str, key: &str) -> Option<String> {
        let needle = format!("\"{key}\":");
        let start = source.find(&needle)? + needle.len();
        let bytes = source.as_bytes();
        let mut index = start;
        while index < bytes.len() && bytes[index].is_ascii_whitespace() {
            index += 1;
        }
        if index >= bytes.len() || bytes[index] != b'{' {
            return None;
        }

        let mut depth = 0usize;
        let mut in_string = false;
        let mut escaped = false;
        for end in index..bytes.len() {
            let byte = bytes[end];
            if in_string {
                if escaped {
                    escaped = false;
                } else if byte == b'\\' {
                    escaped = true;
                } else if byte == b'"' {
                    in_string = false;
                }
                continue;
            }

            match byte {
                b'"' => in_string = true,
                b'{' => depth += 1,
                b'}' => {
                    depth = depth.saturating_sub(1);
                    if depth == 0 {
                        return Some(source[index..=end].to_string());
                    }
                }
                _ => {}
            }
        }

        None
    }

    fn extract_livewire_initial(html: &str) -> Result<Option<LivewireInitialData>> {
        let regex = Self::regex(r#"wire:initial-data="([^"]+)""#)?;
        for captures in regex.captures_iter(html) {
            let Some(raw) = captures.get(1).map(|value| value.as_str()) else {
                continue;
            };
            let Some(decoded) = Self::decode_livewire_json_attr(raw) else {
                continue;
            };
            let Some(fingerprint_json) = Self::extract_json_object(&decoded, "fingerprint") else {
                continue;
            };
            let Some(server_memo_json) = Self::extract_json_object(&decoded, "serverMemo") else {
                continue;
            };
            let component_regex = Self::regex(r#""name":"([^"]+)""#)?;
            let Some(component) = component_regex
                .captures(&fingerprint_json)
                .and_then(|captures| captures.get(1).map(|value| value.as_str().to_string()))
            else {
                continue;
            };
            let Some(method) = Self::livewire_method(&component) else {
                continue;
            };
            return Ok(Some(LivewireInitialData {
                component,
                method: method.to_string(),
                fingerprint_json,
                server_memo_json,
            }));
        }
        Ok(None)
    }

    async fn fetch_livewire_html(
        &self,
        target_url: &str,
        options: &ServerOptions,
    ) -> Result<String> {
        let mut requester = requester_or_default(options, CHANNEL_ID, "fetch_livewire_html.page");
        let page_html = requester
            .get_with_headers(target_url, self.html_headers(&format!("{}/", self.url)), Some(wreq::Version::HTTP_11))
            .await
            .map_err(|error| Error::from(format!("fetch page failed for {target_url}: {error}")))?;

        let csrf = Self::extract_csrf_token(&page_html)
            .ok_or_else(|| Error::from(format!("missing csrf token on {target_url}")))?;
        let Some(initial) = Self::extract_livewire_initial(&page_html)? else {
            return Err(Error::from(format!(
                "missing supported livewire initial-data on {target_url}"
            )));
        };

        let update_id = format!("ab{}", Utc::now().timestamp_micros());
        let payload = format!(
            "{{\"fingerprint\":{},\"serverMemo\":{},\"updates\":[{{\"type\":\"callMethod\",\"payload\":{{\"id\":\"{}\",\"method\":\"{}\",\"params\":[]}}}}]}}",
            initial.fingerprint_json, initial.server_memo_json, update_id, initial.method
        );
        let livewire_url = format!("{}/livewire/message/{}", self.url, initial.component);
        let referer = target_url.to_string();
        let user_agent = FIREFOX_UA.to_string();
        let accept = "application/json, text/plain, */*".to_string();
        let response = requester
            .post(
                &livewire_url,
                &payload,
                vec![
                    ("Content-Type", "application/json"),
                    ("X-Requested-With", "XMLHttpRequest"),
                    ("X-CSRF-TOKEN", csrf.as_str()),
                    ("Referer", referer.as_str()),
                    ("User-Agent", user_agent.as_str()),
                    ("Accept", accept.as_str()),
                ],
            )
            .await
            .map_err(|error| {
                Error::from(format!(
                    "livewire request failed for {target_url} component={}: {error}",
                    initial.component
                ))
            })?;

        let response_text = response
            .text()
            .await
            .map_err(|error| Error::from(format!("livewire response text failed: {error}")))?;
        let parsed: Value = serde_json::from_str(&response_text)?;
        let effects_html = parsed
            .get("effects")
            .and_then(|value| value.get("html"))
            .and_then(Value::as_str)
            .unwrap_or("")
            .to_string();
        crate::flow_debug!(
            "archivebate livewire component={} target={} effects_html_len={} body_preview={}",
            initial.component,
            crate::util::flow_debug::preview(target_url, 120),
            effects_html.len(),
            crate::util::flow_debug::preview(&response_text, 120)
        );
        if !effects_html.trim().is_empty() {
            return Ok(effects_html);
        }

        Ok(page_html)
    }

    async fn fetch_items_for_target(
        &self,
        cache: VideoCache,
        target: &Target,
        page: u16,
        per_page: usize,
        options: &ServerOptions,
    ) -> Result<Vec<VideoItem>> {
        let target_url = self.build_target_url(target, page);
        let cache_key = format!("{CHANNEL_ID}:{target_url}");
        if let Some((time, items)) = cache.get(&cache_key) {
            if time.elapsed().unwrap_or_default().as_secs() < 60 * 10 {
                return Ok(items.iter().take(per_page).cloned().collect());
            }
        }

        let html = self.fetch_livewire_html(&target_url, options).await?;
        let items = self.parse_video_items(&html, target, per_page)?;
        crate::flow_debug!(
            "archivebate parsed target={} page={} items={} html_preview={}",
            crate::util::flow_debug::preview(&target_url, 120),
            page,
            items.len(),
            crate::util::flow_debug::preview(&html, 120)
        );
        if !items.is_empty() {
            cache.insert(cache_key, items.clone());
        }
        Ok(items)
    }

    async fn refresh_uploaders_from_home(&self, options: &ServerOptions) -> Result<()> {
        let items = self
            .fetch_items_for_target(
                VideoCache::new(),
                &Target::Home,
                1,
                120,
                options,
            )
            .await?;
        for item in items {
            if let Some(uploader) = item.uploader {
                self.upsert_uploader_option(&uploader);
            }
        }
        Ok(())
    }

    async fn search_profiles(
        &self,
        query: &str,
        page: u16,
        options: &ServerOptions,
    ) -> Result<Vec<SearchProfile>> {
        let query_string = {
            let mut serializer = url::form_urlencoded::Serializer::new(String::new());
            serializer.append_pair("query", query);
            serializer.append_pair("page", &page.max(1).to_string());
            serializer.finish()
        };
        let search_url = format!("{}/api/v1/search?{query_string}", self.url);

        let mut requester = requester_or_default(options, CHANNEL_ID, "resolve_search_target");
        let response = requester
            .get_raw_with_headers(&search_url, self.search_headers(&format!("{}/", self.url)))
            .await
            .map_err(|error| Error::from(format!("search request failed: {error}")))?;
        if !response.status().is_success() {
            return Err(Error::from(format!(
                "search request returned status {}",
                response.status()
            )));
        }
        let body = response
            .text()
            .await
            .map_err(|error| Error::from(format!("search response text failed: {error}")))?;
        let parsed: SearchResponse = serde_json::from_str(&body)?;
        Ok(parsed.data)
    }

    async fn get_default(
        &self,
        cache: VideoCache,
        page: u16,
        per_page: usize,
        options: ServerOptions,
    ) -> Result<Vec<VideoItem>> {
        let target = self.resolve_option_target(&options);
        self.fetch_items_for_target(cache, &target, page, per_page, &options)
            .await
    }

    async fn query(
        &self,
        cache: VideoCache,
        page: u16,
        per_page: usize,
        query: &str,
        options: ServerOptions,
    ) -> Result<Vec<VideoItem>> {
        if let Some(target) = self.target_from_shortcut(query) {
            return self
                .fetch_items_for_target(cache, &target, page, per_page, &options)
                .await;
        }

        let mut candidates = self.search_profiles(query, page, &options).await?;
        if candidates.is_empty() {
            return Ok(vec![]);
        }

        let normalized_query = Self::normalize_title(query);
        candidates.sort_by_key(|entry| {
            if Self::normalize_title(&entry.username) == normalized_query {
                0
            } else {
                1
            }
        });

        for candidate in candidates.into_iter().take(8) {
            let username = candidate.username.trim();
            if username.is_empty() {
                continue;
            }
            let target = Target::Profile {
                username: username.to_string(),
                platform: candidate.platform.clone(),
                gender: candidate.gender.clone(),
            };
            let items = self
                .fetch_items_for_target(cache.clone(), &target, 1, per_page, &options)
                .await?;
            if !items.is_empty() {
                return Ok(items);
            }
        }

        Ok(vec![])
    }
}

#[async_trait]
impl Provider for ArchivebateProvider {
    async fn get_videos(
        &self,
        cache: VideoCache,
        pool: DbPool,
        _sort: String,
        query: Option<String>,
        page: String,
        per_page: String,
        options: ServerOptions,
    ) -> Vec<VideoItem> {
        let _ = pool;
        let page = page.parse::<u16>().unwrap_or(1);
        let per_page = per_page.parse::<usize>().unwrap_or(36).clamp(1, 120);

        let result = match query {
            Some(query) if !query.trim().is_empty() => {
                self.query(cache, page, per_page, &query, options.clone()).await
            }
            _ => self.get_default(cache, page, per_page, options.clone()).await,
        };

        match result {
            Ok(videos) => {
                if videos.is_empty() {
                    return videos;
                }
                stream::iter(videos.into_iter().map(|video| {
                    let provider = self.clone();
                    let options = options.clone();
                    async move {
                        let timeout_result = timeout(
                            StdDuration::from_secs(8),
                            provider.enrich_video(video.clone(), &options),
                        )
                        .await;
                        match timeout_result {
                            Ok(enriched) => enriched,
                            Err(_) => video,
                        }
                    }
                }))
                .buffer_unordered(4)
                .collect::<Vec<_>>()
                .await
            }
            Err(error) => {
                report_provider_error(CHANNEL_ID, "get_videos", &error.to_string()).await;
                vec![]
            }
        }
    }

    fn get_channel(&self, clientversion: ClientVersion) -> Option<Channel> {
        Some(self.build_channel(clientversion))
    }
}

#[cfg(test)]
mod tests {
    use super::ArchivebateProvider;

    #[test]
    fn extracts_mixdrop_wurl_from_packed_eval() {
        let html = r#"
<script>
eval(function(p,a,c,k,e,d){e=function(c){return c};if(!''.replace(/^/,String)){while(c--){d[c]=k[c]||c}k=[function(e){return d[e]}];e=function(){return'\\w+'};c=1};while(c--){if(k[c]){p=p.replace(new RegExp('\\b'+e(c)+'\\b','g'),k[c])}}return p}('1.2="//3.4.5/6/7.8?9=a&b=c";',13,13,'|MDCore|wurl|o230m5y6z|mxcontent|net|v2|r6pkwozjber741|mp4|s|TvNTJe3_z_6nKveumEHk8Q|e|1776460168'.split('|'),0,{}))
</script>
"#;
        let actual = ArchivebateProvider::extract_mixdrop_media_url(html)
            .expect("expected mixdrop media url");
        assert_eq!(
            actual,
            "https://o230m5y6z.mxcontent.net/v2/r6pkwozjber741.mp4?s=TvNTJe3_z_6nKveumEHk8Q&e=1776460168"
        );
    }
}