use serenity::prelude::*;
use serenity::model::prelude::*;
use serenity::model::channel::Message;

use crate::utils;

// COLOR ROLE IDS
const ROLE_ID_RED:      u64 = 279338933748236289;
const ROLE_ID_GREEN:    u64 = 279338847102566400;
const ROLE_ID_BLUE:     u64 = 279338904526782464;
const ROLE_ID_YELLOW:   u64 = 279339011921805312;
const ROLE_ID_PINK:     u64 = 279339051444862976;
const ROLE_ID_ORANGE:   u64 = 279339077382438912;
const ROLE_ID_PURPLE:   u64 = 284310454908747787;


pub async fn parse_command(ctx: Context, msg: Message, server_id: GuildId)
{

    if handle_meme(ctx.clone(), msg.clone(), server_id).await
    {
        return;
    }

    let command_lower = msg.content.to_lowercase();
    let mut command_iter = command_lower.split_whitespace();
    let command_start = command_iter.next();


    if command_start == Some(".randomizer")
    {
        let item = utils::get_random_item();
        utils::send_msg(ctx, msg.channel_id, &format!("You found {}!", item)).await;
        return;
    }

    if command_start == Some(".colors")
    {
        utils::send_msg(ctx, msg.channel_id, "Valid colors are: green blue red purple pink yellow orange").await;
        return;
    }

    if command_start == Some(".setcolor")
    {
        if let Some(arg) = command_iter.next()
        {
            match arg
            {
                // TODO: add color roles
                "red" => { set_color(ctx, msg, RoleId(ROLE_ID_RED), server_id).await; return; }
                "green" => { set_color(ctx, msg, RoleId(ROLE_ID_GREEN), server_id).await; return; }
                "blue" => { set_color(ctx, msg, RoleId(ROLE_ID_BLUE), server_id).await; return; }
                "yellow" => { set_color(ctx, msg, RoleId(ROLE_ID_YELLOW), server_id).await; return; }
                "orange" => { set_color(ctx, msg, RoleId(ROLE_ID_ORANGE), server_id).await; return; }
                "pink" => { set_color(ctx, msg, RoleId(ROLE_ID_PINK), server_id).await; return; }
                "purple" => { set_color(ctx, msg, RoleId(ROLE_ID_PURPLE), server_id).await; return; }
                _ => utils::Logger::log_error(ctx, &format!("unknown .color argument: {}", arg)).await
            };
        }
    }

}

///////////////////// HELPERS
async fn set_color(ctx: Context, msg: Message, role_id: RoleId, server_id: GuildId)
{
    // Unset all color roles
    let colors = [ROLE_ID_RED, ROLE_ID_GREEN, ROLE_ID_BLUE, ROLE_ID_YELLOW, ROLE_ID_PINK, ROLE_ID_ORANGE, ROLE_ID_PURPLE];
    for color in colors
    {
        if let Err(why) = utils::remove_role(ctx.clone(), msg.author.clone().into(), RoleId(color), server_id).await
        {
            utils::send_msg(ctx.clone(), msg.channel_id, &format!("Could not set color")).await;
            utils::Logger::log_error(ctx.clone(), &format!("set_color failed - could not remove other color roles: {}", why)).await;
            return;
        }
    }

    // Set requested color role
    match utils::add_role(ctx.clone(), msg.author.into(), role_id, server_id).await
    {
        Ok(role) => 
        {
            utils::send_msg(ctx.clone(), msg.channel_id, &format!("Added role: {}", role.name)).await;
            return;
        }

        Err(why) => 
        {
            utils::send_msg(ctx.clone(), msg.channel_id, &format!("Could not set color role")).await;
            utils::Logger::log_error(ctx.clone(), &format!("set_color: Failed to set color role: {}", why)).await;
            return;
        }
    }
}

async fn handle_meme(ctx: Context, msg: Message, server_id: GuildId) -> bool
{
    let command_lower = msg.content.to_lowercase();

    match command_lower.as_str()
    {
        ".beer" => { utils::send_msg(ctx, msg.channel_id, "https://www.youtube.com/watch?v=IZVHBMCdXIw").await; return true }
        ".beeer" => { utils::send_msg(ctx, msg.channel_id, "https://youtu.be/nPtMHSYtPc4").await; return true }
        ".ivan" => { utils::send_msg(ctx, msg.channel_id, "http://i.imgur.com/0sjR5lE.jpg").await; return true }
        ".hotdog" => { utils::send_msg(ctx, msg.channel_id, "https://www.youtube.com/watch?v=ZXVhOPiM4mk").await; return true }
        ".edu" => { utils::send_msg(ctx, msg.channel_id, "<:ThisIsFine:243880310859759616> http://imgur.com/1STAzsl").await; return true }
        ".gari" => { utils::send_msg(ctx, msg.channel_id, "http://i.imgur.com/EYAti0a.jpg").await; return true }
        ".deerforce" => { utils::send_msg(ctx, msg.channel_id, "https://i.imgur.com/PSxFfku.png").await; return true }
        _ => { return false; }
    }
}