use super::{PaginatedQuery, render_error};
use crate::{
    assets::initial_context, check_user_blocked_or_private, get_lang, get_user_from_token, State,
};
use axum::{
    extract::{Path, Query},
    response::{Html, IntoResponse},
    Extension,
};
use axum_extra::extract::CookieJar;
use serde::Deserialize;
use tetratto_core::model::{permissions::FinePermission, requests::ActionType, Error};
use std::fs::read_to_string;
use pathbufd::PathBufD;

pub async fn not_found(jar: CookieJar, Extension(data): Extension<State>) -> impl IntoResponse {
    let data = data.read().await;
    let user = get_user_from_token!(jar, data.0);
    Html(
        render_error(
            Error::GeneralNotFound("page".to_string()),
            &jar,
            &data,
            &user,
        )
        .await,
    )
}

/// `/`
pub async fn index_request(
    jar: CookieJar,
    Extension(data): Extension<State>,
    Query(req): Query<PaginatedQuery>,
) -> impl IntoResponse {
    let data = data.read().await;
    let user = match get_user_from_token!(jar, data.0) {
        Some(ua) => ua,
        None => {
            return {
                // all timeline for unauthenticated users
                // i'm only changing this for stripe
                let list = match data.0.get_latest_posts(12, req.page).await {
                    Ok(l) => match data
                        .0
                        .fill_posts_with_community(l, 0, &Vec::new(), &None)
                        .await
                    {
                        Ok(l) => l,
                        Err(e) => return Html(render_error(e, &jar, &data, &None).await),
                    },
                    Err(e) => return Html(render_error(e, &jar, &data, &None).await),
                };

                let lang = get_lang!(jar, data.0);
                let mut context = initial_context(&data.0.0.0, lang, &None).await;

                context.insert("list", &list);
                context.insert("page", &req.page);
                Html(data.1.render("timelines/all.html", &context).unwrap())
            };
        }
    };

    let ignore_users = crate::ignore_users_gen!(user!, data);

    let list = match data
        .0
        .get_posts_from_user_communities(user.id, 12, req.page)
        .await
    {
        Ok(l) => match data
            .0
            .fill_posts_with_community(l, user.id, &ignore_users, &Some(user.clone()))
            .await
        {
            Ok(l) => l,
            Err(e) => return Html(render_error(e, &jar, &data, &Some(user)).await),
        },
        Err(e) => return Html(render_error(e, &jar, &data, &Some(user)).await),
    };

    let lang = get_lang!(jar, data.0);
    let mut context = initial_context(&data.0.0.0, lang, &Some(user)).await;

    context.insert("list", &list);
    context.insert("page", &req.page);
    Html(data.1.render("timelines/home.html", &context).unwrap())
}

/// `/popular`
pub async fn popular_request(
    jar: CookieJar,
    Extension(data): Extension<State>,
    Query(req): Query<PaginatedQuery>,
) -> impl IntoResponse {
    let data = data.read().await;
    let user = get_user_from_token!(jar, data.0);

    let ignore_users = crate::ignore_users_gen!(user, data);

    let list = match data.0.get_popular_posts(12, req.page, 604_800_000).await {
        Ok(l) => match data
            .0
            .fill_posts_with_community(
                l,
                if let Some(ref ua) = user { ua.id } else { 0 },
                &ignore_users,
                &user,
            )
            .await
        {
            Ok(l) => l,
            Err(e) => return Html(render_error(e, &jar, &data, &user).await),
        },
        Err(e) => return Html(render_error(e, &jar, &data, &user).await),
    };

    let lang = get_lang!(jar, data.0);
    let mut context = initial_context(&data.0.0.0, lang, &user).await;

    context.insert("list", &list);
    context.insert("page", &req.page);
    Html(data.1.render("timelines/popular.html", &context).unwrap())
}

/// `/following`
pub async fn following_request(
    jar: CookieJar,
    Extension(data): Extension<State>,
    Query(req): Query<PaginatedQuery>,
) -> impl IntoResponse {
    let data = data.read().await;
    let user = match get_user_from_token!(jar, data.0) {
        Some(ua) => ua,
        None => {
            return Err(Html(
                render_error(Error::NotAllowed, &jar, &data, &None).await,
            ));
        }
    };

    let ignore_users = crate::ignore_users_gen!(user!, data);

    let list = match data
        .0
        .get_posts_from_user_following(user.id, 12, req.page)
        .await
    {
        Ok(l) => match data
            .0
            .fill_posts_with_community(l, user.id, &ignore_users, &Some(user.clone()))
            .await
        {
            Ok(l) => l,
            Err(e) => return Err(Html(render_error(e, &jar, &data, &Some(user)).await)),
        },
        Err(e) => return Err(Html(render_error(e, &jar, &data, &Some(user)).await)),
    };

    let lang = get_lang!(jar, data.0);
    let mut context = initial_context(&data.0.0.0, lang, &Some(user)).await;

    context.insert("list", &list);
    context.insert("page", &req.page);
    Ok(Html(
        data.1.render("timelines/following.html", &context).unwrap(),
    ))
}

/// `/all`
pub async fn all_request(
    jar: CookieJar,
    Extension(data): Extension<State>,
    Query(req): Query<PaginatedQuery>,
) -> impl IntoResponse {
    let data = data.read().await;
    let user = get_user_from_token!(jar, data.0);

    let ignore_users = crate::ignore_users_gen!(user, data);

    let list = match data.0.get_latest_posts(12, req.page).await {
        Ok(l) => match data
            .0
            .fill_posts_with_community(
                l,
                if let Some(ref ua) = user { ua.id } else { 0 },
                &ignore_users,
                &user,
            )
            .await
        {
            Ok(l) => l,
            Err(e) => return Html(render_error(e, &jar, &data, &user).await),
        },
        Err(e) => return Html(render_error(e, &jar, &data, &user).await),
    };

    let lang = get_lang!(jar, data.0);
    let mut context = initial_context(&data.0.0.0, lang, &user).await;

    context.insert("list", &list);
    context.insert("page", &req.page);
    Html(data.1.render("timelines/all.html", &context).unwrap())
}

/// `/questions`
pub async fn index_questions_request(
    jar: CookieJar,
    Extension(data): Extension<State>,
    Query(req): Query<PaginatedQuery>,
) -> impl IntoResponse {
    let data = data.read().await;
    let user = match get_user_from_token!(jar, data.0) {
        Some(ua) => ua,
        None => {
            return Html(render_error(Error::NotAllowed, &jar, &data, &None).await);
        }
    };

    let ignore_users = crate::ignore_users_gen!(user!, data);

    let list = match data
        .0
        .get_questions_from_user_communities(user.id, 12, req.page)
        .await
    {
        Ok(l) => match data.0.fill_questions(l, &ignore_users).await {
            Ok(l) => l,
            Err(e) => return Html(render_error(e, &jar, &data, &Some(user)).await),
        },
        Err(e) => return Html(render_error(e, &jar, &data, &Some(user)).await),
    };

    let lang = get_lang!(jar, data.0);
    let mut context = initial_context(&data.0.0.0, lang, &Some(user)).await;

    context.insert("list", &list);
    context.insert("page", &req.page);
    Html(
        data.1
            .render("timelines/home_questions.html", &context)
            .unwrap(),
    )
}

/// `/popular/questions`
pub async fn popular_questions_request(
    jar: CookieJar,
    Extension(data): Extension<State>,
    Query(req): Query<PaginatedQuery>,
) -> impl IntoResponse {
    let data = data.read().await;
    let user = match get_user_from_token!(jar, data.0) {
        Some(ua) => ua,
        None => {
            return Html(render_error(Error::NotAllowed, &jar, &data, &None).await);
        }
    };

    let ignore_users = crate::ignore_users_gen!(user!, data);

    let list = match data
        .0
        .get_popular_global_questions(12, req.page, 604_800_000)
        .await
    {
        Ok(l) => match data.0.fill_questions(l, &ignore_users).await {
            Ok(l) => l,
            Err(e) => return Html(render_error(e, &jar, &data, &Some(user)).await),
        },
        Err(e) => return Html(render_error(e, &jar, &data, &Some(user)).await),
    };

    let lang = get_lang!(jar, data.0);
    let mut context = initial_context(&data.0.0.0, lang, &Some(user)).await;

    context.insert("list", &list);
    context.insert("page", &req.page);
    Html(
        data.1
            .render("timelines/popular_questions.html", &context)
            .unwrap(),
    )
}

/// `/following/questions`
pub async fn following_questions_request(
    jar: CookieJar,
    Extension(data): Extension<State>,
    Query(req): Query<PaginatedQuery>,
) -> impl IntoResponse {
    let data = data.read().await;
    let user = match get_user_from_token!(jar, data.0) {
        Some(ua) => ua,
        None => {
            return Err(Html(
                render_error(Error::NotAllowed, &jar, &data, &None).await,
            ));
        }
    };

    let ignore_users = crate::ignore_users_gen!(user!, data);

    let list = match data
        .0
        .get_questions_from_user_following(user.id, 12, req.page)
        .await
    {
        Ok(l) => match data.0.fill_questions(l, &ignore_users).await {
            Ok(l) => l,
            Err(e) => return Err(Html(render_error(e, &jar, &data, &Some(user)).await)),
        },
        Err(e) => return Err(Html(render_error(e, &jar, &data, &Some(user)).await)),
    };

    let lang = get_lang!(jar, data.0);
    let mut context = initial_context(&data.0.0.0, lang, &Some(user)).await;

    context.insert("list", &list);
    context.insert("page", &req.page);
    Ok(Html(
        data.1
            .render("timelines/following_questions.html", &context)
            .unwrap(),
    ))
}

/// `/all/questions`
pub async fn all_questions_request(
    jar: CookieJar,
    Extension(data): Extension<State>,
    Query(req): Query<PaginatedQuery>,
) -> impl IntoResponse {
    let data = data.read().await;
    let user = get_user_from_token!(jar, data.0);

    let ignore_users = crate::ignore_users_gen!(user, data);

    let list = match data.0.get_latest_global_questions(12, req.page).await {
        Ok(l) => match data.0.fill_questions(l, &ignore_users).await {
            Ok(l) => l,
            Err(e) => return Html(render_error(e, &jar, &data, &user).await),
        },
        Err(e) => return Html(render_error(e, &jar, &data, &user).await),
    };

    let lang = get_lang!(jar, data.0);
    let mut context = initial_context(&data.0.0.0, lang, &user).await;

    context.insert("list", &list);
    context.insert("page", &req.page);
    Html(
        data.1
            .render("timelines/all_questions.html", &context)
            .unwrap(),
    )
}

#[derive(Deserialize)]
pub struct NotificationsProps {
    #[serde(default)]
    pub id: usize,
    #[serde(default)]
    pub page: usize,
}

/// `/notifs`
pub async fn notifications_request(
    jar: CookieJar,
    Extension(data): Extension<State>,
    Query(props): Query<NotificationsProps>,
) -> impl IntoResponse {
    let data = data.read().await;
    let user = match get_user_from_token!(jar, data.0) {
        Some(ua) => ua,
        None => {
            return Err(Html(
                render_error(Error::NotAllowed, &jar, &data, &None).await,
            ));
        }
    };

    let profile = if props.id != 0 && user.permissions.check(FinePermission::MANAGE_NOTIFICATIONS) {
        match data.0.get_user_by_id(props.id).await {
            Ok(p) => p,
            Err(e) => return Err(Html(render_error(e, &jar, &data, &None).await)),
        }
    } else {
        user.clone()
    };

    let notifications = match data
        .0
        .get_notifications_by_owner_paginated(profile.id, 12, props.page)
        .await
    {
        Ok(p) => p,
        Err(e) => return Err(Html(render_error(e, &jar, &data, &Some(user)).await)),
    };

    let lang = get_lang!(jar, data.0);
    let mut context = initial_context(&data.0.0.0, lang, &Some(user)).await;

    context.insert("page", &props.page);
    context.insert("profile", &profile);
    context.insert("notifications", &notifications);

    // return
    Ok(Html(
        data.1.render("misc/notifications.html", &context).unwrap(),
    ))
}

/// `/requests`
pub async fn requests_request(
    jar: CookieJar,
    Extension(data): Extension<State>,
    Query(props): Query<NotificationsProps>,
) -> impl IntoResponse {
    let data = data.read().await;
    let user = match get_user_from_token!(jar, data.0) {
        Some(ua) => ua,
        None => {
            return Err(Html(
                render_error(Error::NotAllowed, &jar, &data, &None).await,
            ));
        }
    };

    let profile = if props.id != 0 && user.permissions.check(FinePermission::MANAGE_REQUESTS) {
        match data.0.get_user_by_id(props.id).await {
            Ok(p) => p,
            Err(e) => return Err(Html(render_error(e, &jar, &data, &None).await)),
        }
    } else {
        user.clone()
    };

    let requests = match data
        .0
        .get_requests_by_owner_paginated(
            if props.id != 0 { props.id } else { user.id },
            12,
            props.page,
        )
        .await
    {
        Ok(p) => p,
        Err(e) => return Err(Html(render_error(e, &jar, &data, &Some(user)).await)),
    };

    let ignore_users = crate::ignore_users_gen!(user!, data);

    let questions = match data
        .0
        .fill_questions(
            {
                let mut q = Vec::new();

                for req in &requests {
                    if req.action_type != ActionType::Answer {
                        continue;
                    }

                    q.push(match data.0.get_question_by_id(req.linked_asset).await {
                        Ok(p) => p,
                        Err(_) => {
                            if let Err(e) = data
                                .0
                                .delete_request(req.id, req.linked_asset, &user, true)
                                .await
                            {
                                return Err(Html(render_error(e, &jar, &data, &Some(user)).await));
                            }

                            continue;
                        }
                    });
                }

                q
            },
            &ignore_users,
        )
        .await
    {
        Ok(q) => q,
        Err(e) => return Err(Html(render_error(e, &jar, &data, &Some(user)).await)),
    };

    let lang = get_lang!(jar, data.0);
    let mut context = initial_context(&data.0.0.0, lang, &Some(user)).await;

    context.insert("page", &props.page);
    context.insert("profile", &profile);
    context.insert("requests", &requests);
    context.insert("questions", &questions);

    // return
    Ok(Html(data.1.render("misc/requests.html", &context).unwrap()))
}

/// `/doc/{file_name}`
pub async fn markdown_document_request(
    jar: CookieJar,
    Extension(data): Extension<State>,
    Path(name): Path<String>,
) -> impl IntoResponse {
    let data = data.read().await;
    let user = get_user_from_token!(jar, data.0);

    if name.contains("//") | name.contains("..") | name.starts_with("/") {
        return Err(Html(
            render_error(Error::NotAllowed, &jar, &data, &user).await,
        ));
    }

    let path = PathBufD::current().extend(&[&data.0.0.0.dirs.docs, &name]);
    let file = match read_to_string(&path) {
        Ok(f) => f,
        Err(e) => {
            return Err(Html(
                render_error(Error::MiscError(e.to_string()), &jar, &data, &user).await,
            ));
        }
    };

    let lang = get_lang!(jar, data.0);
    let mut context = initial_context(&data.0.0.0, lang, &user).await;
    context.insert("file", &file);
    context.insert("file_name", &name);

    // return
    Ok(Html(data.1.render("misc/markdown.html", &context).unwrap()))
}

#[derive(Deserialize)]
pub struct SearchQuery {
    #[serde(default)]
    pub query: String,
    #[serde(default)]
    pub profile: usize,
    #[serde(default)]
    pub page: usize,
}

/// `/search`
pub async fn search_request(
    jar: CookieJar,
    Extension(data): Extension<State>,
    Query(mut req): Query<SearchQuery>,
) -> impl IntoResponse {
    let data = data.read().await;
    let user = match get_user_from_token!(jar, data.0) {
        Some(ua) => ua,
        None => {
            return Err(Html(
                render_error(Error::NotAllowed, &jar, &data, &None).await,
            ));
        }
    };

    if req.profile == 0 && !user.permissions.check(FinePermission::SUPPORTER) {
        req.query = String::new();
    }

    req.query = req.query.trim().replace(" ", " & "); // change spaces into & for tsquery

    let ignore_users = crate::ignore_users_gen!(user!, data);

    let list = if req.query.is_empty() {
        Vec::new()
    } else {
        if req.profile != 0 {
            match data
                .0
                .get_posts_by_user_searched(req.profile, 12, req.page, &req.query, &Some(&user))
                .await
            {
                Ok(l) => match data
                    .0
                    .fill_posts_with_community(l, user.id, &ignore_users, &Some(user.clone()))
                    .await
                {
                    Ok(l) => l,
                    Err(_) => Vec::new(),
                },
                Err(e) => return Err(Html(render_error(e, &jar, &data, &Some(user)).await)),
            }
        } else {
            match data.0.get_posts_searched(12, req.page, &req.query).await {
                Ok(l) => match data
                    .0
                    .fill_posts_with_community(l, user.id, &ignore_users, &Some(user.clone()))
                    .await
                {
                    Ok(l) => l,
                    Err(_) => Vec::new(),
                },
                Err(e) => return Err(Html(render_error(e, &jar, &data, &Some(user)).await)),
            }
        }
    };

    let profile = if req.profile != 0 {
        Some(match data.0.get_user_by_id(req.profile).await {
            Ok(ua) => {
                check_user_blocked_or_private!(Some(user.clone()), ua, data, jar);
                ua
            }
            Err(e) => return Err(Html(render_error(e, &jar, &data, &Some(user)).await)),
        })
    } else {
        None
    };

    let lang = get_lang!(jar, data.0);
    let mut context = initial_context(&data.0.0.0, lang, &Some(user)).await;

    context.insert("list", &list);
    context.insert("profile", &profile);
    context.insert("query", &req.query);
    context.insert("page", &req.page);

    Ok(Html(
        data.1.render("timelines/search.html", &context).unwrap(),
    ))
}