use std::time::Duration;

use poise::serenity::model::id::{GuildId, RoleId};

use crate::{sound::Sound, Context, Error, MAX_SOUNDS, PATREON_GUILD, PATREON_ROLE};

/// Upload a new sound to the bot
#[poise::command(slash_command, rename = "upload", category = "Manage")]
pub async fn upload_new_sound(
    ctx: Context<'_>,
    #[description = "Name to upload sound to"] name: String,
) -> Result<(), Error> {
    fn is_numeric(s: &String) -> bool {
        for char in s.chars() {
            if char.is_digit(10) {
                continue;
            } else {
                return false;
            }
        }
        true
    }

    if !name.is_empty() && name.len() <= 20 {
        if !is_numeric(&name) {
            let pool = ctx.data().database.clone();

            // need to check the name is not currently in use by the user
            let count_name =
                Sound::count_named_user_sounds(ctx.author().id, &name, pool.clone()).await?;
            if count_name > 0 {
                ctx.say(
                    "You are already using that name. Please choose a unique name for your upload.",
                )
                .await?;
            } else {
                // need to check how many sounds user currently has
                let count = Sound::count_user_sounds(ctx.author().id, pool.clone()).await?;
                let mut permit_upload = true;

                // need to check if user is patreon or nah
                if count >= *MAX_SOUNDS {
                    let patreon_guild_member = GuildId(*PATREON_GUILD)
                        .member(ctx.discord(), ctx.author().id)
                        .await;

                    if let Ok(member) = patreon_guild_member {
                        permit_upload = member.roles.contains(&RoleId(*PATREON_ROLE));
                    } else {
                        permit_upload = false;
                    }
                }

                if permit_upload {
                    let attachment = {
                        ctx.say("Please now upload an audio file under 1MB in size (larger files will be automatically trimmed):").await?;

                        let reply = ctx
                            .channel_id()
                            .await_reply(&ctx.discord())
                            .author_id(ctx.author().id)
                            .timeout(Duration::from_secs(120))
                            .await;

                        match reply {
                            Some(reply_msg) => {
                                if let Some(attachment) = reply_msg.attachments.get(0) {
                                    Some(attachment.url.clone())
                                } else {
                                    ctx.say("Please upload 1 attachment following your upload command. Aborted").await?;

                                    None
                                }
                            }

                            None => {
                                ctx.say("Upload timed out. Please redo the command").await?;

                                None
                            }
                        }
                    };

                    if let Some(url) = attachment {
                        match Sound::create_anon(
                            &name,
                            url.as_str(),
                            ctx.guild_id().unwrap(),
                            ctx.author().id,
                            pool,
                        )
                        .await
                        {
                            Ok(_) => {
                                ctx.say("Sound has been uploaded").await?;
                            }

                            Err(e) => {
                                println!("Error occurred during upload: {:?}", e);
                                ctx.say("Sound failed to upload.").await?;
                            }
                        }
                    }
                } else {
                    ctx.say(format!(
                            "You have reached the maximum number of sounds ({}). Either delete some with `/delete` or join our Patreon for unlimited uploads at **https://patreon.com/jellywx**",
                            *MAX_SOUNDS,
                        )).await?;
                }
            }
        } else {
            ctx.say("Please ensure the sound name contains a non-numerical character")
                .await?;
        }
    } else {
        ctx.say("Usage: `/upload <name>`. Please ensure the name provided is less than 20 characters in length").await?;
    }

    Ok(())
}

/// Delete a sound you have uploaded
#[poise::command(slash_command, rename = "delete", category = "Manage")]
pub async fn delete_sound(
    ctx: Context<'_>,
    #[description = "Name or ID of sound to delete"] name: String,
) -> Result<(), Error> {
    let pool = ctx.data().database.clone();

    let uid = ctx.author().id.0;
    let gid = ctx.guild_id().unwrap().0;

    let sound_vec = Sound::search_for_sound(&name, gid, uid, pool.clone(), true).await?;
    let sound_result = sound_vec.first();

    match sound_result {
        Some(sound) => {
            if sound.uploader_id != Some(uid) && sound.server_id != gid {
                ctx.say("You can only delete sounds from this guild or that you have uploaded.")
                    .await?;
            } else {
                let has_perms = {
                    if let Ok(member) = ctx.guild_id().unwrap().member(&ctx.discord(), uid).await {
                        if let Ok(perms) = member.permissions(&ctx.discord()) {
                            perms.manage_guild()
                        } else {
                            false
                        }
                    } else {
                        false
                    }
                };

                if sound.uploader_id == Some(uid) || has_perms {
                    sound.delete(pool).await?;

                    ctx.say("Sound has been deleted").await?;
                } else {
                    ctx.say("Only server admins can delete sounds uploaded by other users.")
                        .await?;
                }
            }
        }

        None => {
            ctx.say("Sound could not be found by that name.").await?;
        }
    }

    Ok(())
}

/// Change a sound between public and private
#[poise::command(slash_command, rename = "public", category = "Manage")]
pub async fn change_public(
    ctx: Context<'_>,
    #[description = "Name or ID of sound to change privacy setting of"] name: String,
) -> Result<(), Error> {
    let pool = ctx.data().database.clone();

    let uid = ctx.author().id.0;
    let gid = ctx.guild_id().unwrap().0;

    let mut sound_vec = Sound::search_for_sound(&name, gid, uid, pool.clone(), true).await?;
    let sound_result = sound_vec.first_mut();

    match sound_result {
        Some(sound) => {
            if sound.uploader_id != Some(uid) {
                ctx.say("You can only change the visibility of sounds you have uploaded. Use `/list` to view your sounds").await?;
            } else {
                if sound.public {
                    sound.public = false;

                    ctx.say("Sound has been set to private 🔒").await?;
                } else {
                    sound.public = true;

                    ctx.say("Sound has been set to public 🔓").await?;
                }

                sound.commit(pool).await?
            }
        }

        None => {
            ctx.say("Sound could not be found by that name.").await?;
        }
    }

    Ok(())
}