use actix_web::{HttpResponse, HttpRequest, http::header::HeaderValue, http::header::ContentType, Responder};
use actix_files::NamedFile;
use std::path::PathBuf;
use json::{JsonValue, object};

use crate::include_file;
use crate::router::{userdata, items};

fn get_config() -> JsonValue {
    let args = crate::get_args();
    object!{
        import: !args.disable_imports,
        export: !args.disable_exports
    }
}

fn get_login_token(req: &HttpRequest) -> Option<String> {
    let blank_header = HeaderValue::from_static("");
    let cookies = req.headers().get("Cookie").unwrap_or(&blank_header).to_str().unwrap_or("");
    if cookies.is_empty() {
        return None;
    }
    return Some(cookies.split("ew_token=").last().unwrap_or("").split(';').collect::<Vec<_>>()[0].to_string());
}

fn error(msg: &str) -> HttpResponse {
    let resp = object!{
        result: "ERR",
        message: msg
    };
    HttpResponse::Ok()
        .insert_header(("Access-Control-Allow-Origin", "*"))
        .insert_header(ContentType::json())
        .body(json::stringify(resp))
    
}

pub fn login(_req: HttpRequest, body: String) -> HttpResponse {
    let body = json::parse(&body).unwrap();
    let token = userdata::webui_login(body["uid"].as_i64().unwrap(), &body["password"].to_string());
    
    if token.is_err() {
        return error(&token.unwrap_err());
    }
    
    let resp = object!{
        result: "OK"
    };
    HttpResponse::Ok()
        .insert_header(ContentType::json())
        .insert_header(("Set-Cookie", format!("ew_token={}; SameSite=Strict; HttpOnly", token.unwrap())))
        .body(json::stringify(resp))
}

pub fn import(_req: HttpRequest, body: String) -> HttpResponse {
    if !get_config()["import"].as_bool().unwrap() {
        return error("Importing accounts is disabled on this server.");
    }
    let body = json::parse(&body).unwrap();
    
    let result = userdata::webui_import_user(body);
    
    if result.is_err() {
        return error(&result.unwrap_err());
    }
    let result = result.unwrap();
    
    let resp = object!{
        result: "OK",
        uid: result["uid"].clone(),
        migration_token: result["migration_token"].clone()
    };
    HttpResponse::Ok()
        .insert_header(ContentType::json())
        .body(json::stringify(resp))
}

pub fn user(req: HttpRequest) -> HttpResponse {
    let token = get_login_token(&req);
    if token.is_none() {
        return error("Not logged in");
    }
    let data = userdata::webui_get_user(&token.unwrap());
    if data.is_none() {
        return error("Expired login");
    }
    let mut data = data.unwrap();
    
    data["userdata"]["user"]["rank"] = items::get_user_rank_data(data["userdata"]["user"]["exp"].as_i64().unwrap())["rank"].clone();
    
    let resp = object!{
        result: "OK",
        data: data
    };
    HttpResponse::Ok()
        .insert_header(ContentType::json())
        .body(json::stringify(resp))
}

pub fn start_loginbonus(req: HttpRequest, body: String) -> HttpResponse {
    let token = get_login_token(&req);
    if token.is_none() {
        return error("Not logged in");
    }
    let body = json::parse(&body).unwrap();
    let resp = userdata::webui_start_loginbonus(body["bonus_id"].as_i64().unwrap(), &token.unwrap());
    
    HttpResponse::Ok()
        .insert_header(ContentType::json())
        .body(json::stringify(resp))
}

pub fn set_time(req: HttpRequest, body: String) -> HttpResponse {
    let token = get_login_token(&req);
    if token.is_none() {
        return error("Not logged in");
    }
    let body = json::parse(&body).unwrap();
    let resp = userdata::set_server_time(body["timestamp"].as_i64().unwrap(), &token.unwrap());
    
    HttpResponse::Ok()
        .insert_header(ContentType::json())
        .body(json::stringify(resp))
}

pub fn logout(req: HttpRequest) -> HttpResponse {
    let token = get_login_token(&req);
    if token.is_some() {
        userdata::webui_logout(&token.unwrap());
    }
    let resp = object!{
        result: "OK"
    };
    HttpResponse::Found()
        .insert_header(ContentType::json())
        .insert_header(("Set-Cookie", "ew_token=deleted; expires=Thu, 01 Jan 1970 00:00:00 GMT"))
        .insert_header(("Location", "/"))
        .body(json::stringify(resp))
}

pub fn main(req: HttpRequest) -> HttpResponse {
    if req.path() == "/" {
        let token = get_login_token(&req);
        if token.is_some() {
            let data = userdata::webui_get_user(&token.unwrap());
            if data.is_some() {
                return HttpResponse::Found()
                    .insert_header(("Location", "/home/"))
                    .body("");
            }
        }
    }
    if req.path() != "/" && req.path() != "/home/" && req.path() != "/import/" && req.path() != "/help/" {
        return HttpResponse::Found()
            .insert_header(("Location", "/"))
            .body("");
    }
    HttpResponse::Ok()
        .insert_header(ContentType::html())
        .body(include_file!("webui/dist/index.html"))
}

pub async fn asset(req: HttpRequest) -> impl Responder {
    let args = crate::get_args();

    if req.path() == "/" {
        return HttpResponse::Ok()
            .insert_header(ContentType::html())
            .body(include_file!("src/web/asset_index.html"));
    }

    let path = req.path();
    let mut modified_path = format!("{}{}", args.asset_path, path);

    modified_path = modified_path.trim_end_matches('/').to_string();

    let filename: PathBuf = modified_path.trim_start_matches('/').into();

    match NamedFile::open(&filename) {
        Ok(file) => file.into_response(&req),
        Err(_) => HttpResponse::NotFound().body("File not found"),
    }
}

pub fn export(req: HttpRequest) -> HttpResponse {
    if !get_config()["export"].as_bool().unwrap() {
        return error("Exporting accounts is disabled on this server.");
    }
    let token = get_login_token(&req);
    if token.is_none() {
        return error("Not logged in");
    }
    let resp = object!{
        result: "OK",
        data: userdata::export_user(&token.unwrap()).unwrap()
    };
    HttpResponse::Ok()
        .insert_header(ContentType::json())
        .body(json::stringify(resp))
}

pub fn server_info(_req: HttpRequest) -> HttpResponse {
    let args = crate::get_args();

    let resp = object!{
        result: "OK",
        data: {
            account_import: get_config()["import"].as_bool().unwrap(),
            links: {
                global: args.global_android,
                japan: args.japan_android,
                ios: {
                    global: args.global_ios,
                    japan: args.japan_ios
                },
                assets: args.assets_url
            }
        }
    };
    HttpResponse::Ok()
    .insert_header(ContentType::json())
    .body(json::stringify(resp))

}