mod admin;
mod album;
mod birthday;
mod celeryman;
mod color;
mod emoji_race;
mod fren_coin;
mod joke;
mod little_fren;
mod motivate;
mod role;
pub(crate) mod shop;
mod transit;
pub(crate) mod voices;

use crate::config::GlobalData;
use crate::discord::fren_coin::give_coin;
use crate::discord::joke::random;
use crate::error::Error;
use crate::models::lil_fren::lil_fren_task;
use crate::models::social_credit::SocialCreditPhrase;
use crate::models::task::Task;
use crate::user::User;
use log::{error, info};
use poise::serenity_prelude::{GuildId, Http, Message, MessageBuilder, ReactionType, RoleId};
use poise::{FrameworkOptions, find_command, serenity_prelude as serenity};
use rand::prelude::IteratorRandom;
use rand::{Rng, rng};
use songbird::SerenityInit;
use std::sync::Arc;
use std::time::Duration;

pub type Context<'a> = poise::Context<'a, Arc<GlobalData>, Error>;

async fn event_handler(
    ctx: &serenity::Context,
    event: &serenity::FullEvent,
    framework: poise::FrameworkContext<'_, Arc<GlobalData>, Error>,
    data: &Arc<GlobalData>,
) -> Result<(), Error> {
    match event {
        serenity::FullEvent::Ready { data_about_bot, .. } => {
            info!("Bot ready, and logged in as {}", data_about_bot.user.name);

            {
                info!("Starting tasks handler...");
                let data = data.clone();
                let ctx = ctx.clone();
                tokio::spawn(async move {
                    let _ = Task::create_reoccurring_tasks(&data).await.is_ok();
                    loop {
                        let _ = Task::run_tasks(&ctx, &data).await.is_ok();
                        tokio::time::sleep(Duration::from_secs(5)).await;
                    }
                });
            }

            {
                info!("Starting lil buddy task...");
                let data = data.clone();
                tokio::spawn(async move { lil_fren_task(data).await });
            }
        }
        serenity::FullEvent::Message { new_message } => {
            if new_message.content.starts_with("!") {
                let command = new_message.content.replace("!", "");
                if find_command(&framework.options.commands, &command, true, &mut Vec::new())
                    .is_none()
                {
                    handle_unrecognised_commands(ctx, new_message, data).await?;
                }
            }

            handle_message(ctx, data, new_message).await?;
        }
        _ => {}
    }
    Ok(())
}

async fn handle_message(
    ctx: &serenity::Context,
    data: &Arc<GlobalData>,
    new_message: &Message,
) -> Result<(), Error> {
    if new_message.content.eq_ignore_ascii_case("yes")
        || new_message.content.eq_ignore_ascii_case("mhmm")
    {
        let mut bot_state = data.bot_state.lock().await;
        if let Some(u) = bot_state.accepted_nsfw {
            if new_message.author.id == u {
                new_message.reply(&ctx.http, "||https://cdn.discordapp.com/attachments/614891432079130625/1041545254362423368/unknown.png||").await.unwrap();
                bot_state.accepted_nsfw = None;
            }
        }
    }

    if new_message.content.to_lowercase().contains("good bot") {
        let recv_coin = give_coin(&data.db, new_message.author.id, 0.50, 25).await?;

        if recv_coin {
            let emojis = &new_message.guild_id.unwrap().emojis(&ctx.http).await?;

            let emoji = {
                let mut rng = rng();
                emojis.iter().choose(&mut rng)
            };

            if let Some(emoji) = emoji {
                new_message
                    .react(
                        &ctx.http,
                        ReactionType::Custom {
                            animated: emoji.animated,
                            id: emoji.id,
                            name: Some(emoji.name.clone()),
                        },
                    )
                    .await?;
            };
        }
    };

    if new_message.content.to_lowercase().contains("bad bot") {
        new_message.react(&ctx.http, '😭').await?;
    }

    give_coin(&data.db, new_message.author.id, 0.05, 10).await?;

    if let Some(phrase) = SocialCreditPhrase::check_if_match(&data.db, &new_message.content)? {
        info!(
            "{} matched phrase '{}' for social credit checking",
            new_message.author.name, phrase.phrase
        );

        let social_credit_change =
            rand::rng().random_range(phrase.lower_bound..=phrase.upper_bound);

        User::update_social_credit(&data.db, new_message.author.id, social_credit_change)?;
    }

    Ok(())
}

async fn handle_unrecognised_commands(
    ctx: &serenity::Context,
    message: &Message,
    data: &GlobalData,
) -> Result<(), Error> {
    let command_parts: Vec<&str> = message.content.split(" ").collect();
    let command = command_parts[0].replace("!", "");

    let tags = if command_parts.len() > 1 {
        command_parts[1..].to_vec()
    } else {
        Vec::new()
    };

    let parsed_album = album::parse_album(ctx, message, data, &command, tags)
        .await
        .unwrap_or_else(|e| {
            error!("Error processing album command: {}", e);
            true
        });

    if !parsed_album {
        match random(ctx, data, message, &command).await {
            Ok(_) => {}
            Err(e) => error!("Error processing random command: {}", e),
        }
    }

    Ok(())
}

async fn pre_command(ctx: Context<'_>) {
    info!(
        "User '{}' is running command '{}' with invocation '{}' in channel '{}'",
        ctx.author().name,
        ctx.invoked_command_name(),
        ctx.invocation_string(),
        ctx.channel_id()
    );
}

#[poise::command(prefix_command, category = "Help")]
pub async fn help(ctx: Context<'_>, command: Option<String>) -> Result<(), Error> {
    if let Some(command) = command {
        let command = find_command(
            &ctx.framework().options.commands,
            &command,
            true,
            &mut Vec::new(),
        );

        if let Some((command, _, _)) = command {
            let mut msg_builder = MessageBuilder::new();

            msg_builder.push_line(format!("# {}", &command.name));
            msg_builder.push_line(command.description.as_ref().unwrap_or(&"".to_string()));

            let parameters = if !command.parameters.is_empty() {
                msg_builder.push_line("### Arguments:");
                for parameter in &command.parameters {
                    msg_builder.push_line(format!(
                        "* `{}`: {}",
                        parameter.name,
                        parameter.description.as_ref().unwrap_or(&"".to_string())
                    ));
                }

                let parameters: Vec<String> = command
                    .parameters
                    .iter()
                    .map(|parameter| parameter.name.clone())
                    .collect();

                let mut parameters_str = parameters.join(" ");

                parameters_str.insert(0, ' ');

                parameters_str
            } else {
                "".to_string()
            };

            msg_builder.push_line("### Usage:");

            msg_builder.push_line(format!("`!{}{}`", &command.name, parameters));

            ctx.reply(msg_builder.build()).await?;
        } else {
            ctx.reply("tbh, no idea what that is. Cringe TBH").await?;
        }
    } else {
        let mut commands: Vec<(String, String)> = ctx
            .framework()
            .options
            .commands
            .iter()
            .map(|c| {
                (
                    c.category.as_ref().unwrap_or(&"None".to_string()).clone(),
                    c.name.clone(),
                )
            })
            .collect();

        if !ctx.data().cfg.admins.contains(&ctx.author().id) {
            // Remove admin commands for lame normal users
            commands.retain_mut(|(category, _)| !category.eq_ignore_ascii_case("Admin"))
        }

        commands.sort_by(|(category1, _), (category2, _)| category1.cmp(category2));

        let mut msg_builder = MessageBuilder::new();

        msg_builder.push_line("# Fren Bot");
        msg_builder.push_line_safe("Your best friend in this Discord!");
        msg_builder.push_line("");
        msg_builder.push_italic_line(
            "Do `!help <command>` to get more information on any of the commands below.",
        );

        let mut last_category = "".to_string();
        for (category, command) in &commands {
            if !last_category.eq_ignore_ascii_case(category) {
                last_category = category.clone();
                msg_builder.push_line(format!("### {}", last_category));
            }

            msg_builder.push_line(format!("* `!{}`", command));
        }

        msg_builder.push_line("-# Made with :sparkling_heart: by Joey");

        ctx.reply(msg_builder.build()).await?;
    }

    Ok(())
}

pub async fn run_bot(global_data: GlobalData) {
    let framework_options: FrameworkOptions<Arc<GlobalData>, Error> = poise::FrameworkOptions {
        prefix_options: poise::PrefixFrameworkOptions {
            prefix: Some("!".into()),
            ignore_bots: true,
            ignore_thread_creation: false,
            case_insensitive_commands: true,
            ..Default::default()
        },
        commands: vec![
            help(),
            admin::dump_db(),
            admin::load_db(),
            admin::add_key(),
            admin::debug_buddy(),
            admin::draw_buddy_states(),
            admin::debug_buddy(),
            admin::op_give(),
            admin::list_tasks(),
            admin::add_role(),
            admin::remove_role(),
            admin::add_social_credit_phrase(),
            admin::remove_social_credit_phrase(),
            admin::list_social_credit_phrases(),
            album::add_image(),
            album::list_albums(),
            birthday::add_birthday(),
            birthday::list_birthdays(),
            celeryman::nudetayne(),
            celeryman::celeryman(),
            celeryman::tayne(),
            color::set_color(),
            color::remove_color(),
            emoji_race::bet(),
            emoji_race::race(),
            emoji_race::start_race(),
            fren_coin::balance(),
            fren_coin::gift(),
            fren_coin::social_credit(),
            joke::add_random(),
            joke::dad_joke(),
            joke::bad_apple(),
            joke::emoji_8ball(),
            joke::insult(),
            joke::list_random(),
            joke::real_roll(),
            joke::roll(),
            little_fren::adopt(),
            little_fren::checkup(),
            little_fren::feed(),
            little_fren::give_medicine(),
            little_fren::give_water(),
            little_fren::play(),
            motivate::motivation(),
            motivate::motivation_add_album(),
            motivate::green_screen(),
            role::list_roles(),
            role::join_role(),
            role::leave_role(),
            shop::buy(),
            shop::inventory(),
            shop::item_help(),
            shop::sell_item(),
            shop::shop(),
            shop::use_item(),
            transit::cta_bets(),
            voices::list_voices(),
            voices::list_words(),
            voices::say(),
        ],
        event_handler: |ctx, event, framework, data| {
            Box::pin(event_handler(ctx, event, framework, data))
        },
        pre_command: |ctx| Box::pin(pre_command(ctx)),
        on_error: |err| {
            Box::pin(async move {
                if let Err(e) = poise::builtins::on_error(err).await {
                    error!("Failed to handle error: {}", e)
                }
            })
        },
        ..Default::default()
    };

    let token = global_data.cfg.bot_token.clone();

    let framework = poise::framework::Framework::builder()
        .options(framework_options)
        .setup(move |ctx, _ready, framework| {
            Box::pin(async move {
                poise::builtins::register_globally(ctx, &framework.options().commands).await?;
                Ok(Arc::new(global_data))
            })
        })
        .build();

    let intents = serenity::GatewayIntents::non_privileged()
        | serenity::GatewayIntents::DIRECT_MESSAGES
        | serenity::GatewayIntents::GUILDS
        | serenity::GatewayIntents::MESSAGE_CONTENT
        | serenity::GatewayIntents::GUILD_MESSAGE_REACTIONS;

    let mut client = serenity::ClientBuilder::new(token, intents)
        .framework(framework)
        .register_songbird()
        .await
        .unwrap();

    client.start().await.unwrap();
}

pub async fn get_role(
    http: &Http,
    guild_id: GuildId,
    role_name: &str,
) -> Result<Option<RoleId>, Error> {
    Ok(guild_id
        .roles(http)
        .await?
        .iter()
        .find(|(_, role)| role.name == role_name)
        .map(|(role_id, _)| role_id)
        .copied())
}