use crate::helper::is_user_admin_right;
use crate::{Context, Error};
use clickhouse_pool::traits::Model;
use croner::Cron;
use database::trivial::{Trivial, TrivialRewardKind};
use poise::serenity_prelude::{Channel, Role};
use tracing::{debug, info, instrument};

/// Config an existing trivia game
#[instrument(name="trivia_config", skip(ctx), level = "info", fields(channel = ctx.channel_id().get(), guild = ?ctx.guild_id().unwrap().get()))]
#[poise::command(
    prefix_command,
    slash_command,
    guild_only,
    category = "Trivia",
    check = "is_user_admin_right"
)]
pub async fn config(
    ctx: Context<'_>,
    #[description = "Channel of the trivia game, or current"] channel_id: Option<Channel>,
    #[description = "Name of the trivia game"] name: Option<String>,
    #[description = "Description of the trivia game"] description: Option<String>,
    #[description = "Whether to use random questions"] random_question: Option<bool>,
    #[description = "Role to ping when a question is asked"] role_ping: Option<Role>,
    #[description = "Whether to enable role ping"] role_ping_enabled: Option<bool>,
    #[description = "Reward kind for the trivia game"] reward_kind: Option<TrivialRewardKind>,
    #[description = "Reward amount for the trivia game"] reward_amount: Option<u64>,
    #[description = "Whether to send an ephemeral message when the answer is taken into account"]
    taken_into_account: Option<bool>,
    #[description = "When to ask the question, in cron format (e.g. '0 0 * * *' for daily)"]
    cron: Option<String>,
    #[description = "When to answer the question, in cron format (e.g. '0 0 * * *' for daily)"]
    cron_answer: Option<String>,
) -> Result<(), Error> {
    let guild_id = match ctx.guild_id() {
        Some(id) => id.get(),
        None => {
            ctx.say("This command can only be used in a server.")
                .await?;
            return Ok(());
        }
    };
    let channel_id = match channel_id {
        Some(c) => c.id().get(),
        None => {
            info!("No channel specified, using current channel.");
            ctx.channel_id().get()
        }
    };
    let manager = ctx.data().datalake_config.clone();
    let search_query = Trivial::build_select_query(
        Some(&format!(
            "channel_id = {} and guild_id = {}",
            channel_id, guild_id
        )),
        None,
        None,
    );
    let mut trivia_exists: Trivial = match manager
        .execute_select_with_retry::<Trivial>(&search_query)
        .await
    {
        Ok(trivia) => {
            if trivia.is_empty() {
                ctx.say("No trivia game found in this channel. Please create one first.")
                    .await?;
                return Ok(());
            }
            if trivia.len() > 1 {
                ctx.say("Multiple trivia games found in this channel. Please contact an admin to resolve this.")
                    .await?;
                return Ok(());
            }
            trivia[0].clone()
        }
        Err(e) => {
            ctx.say(format!("Error fetching trivia game: {}", e))
                .await?;
            return Err(Error::from(e));
        }
    };
    debug!("Found trivia game: {:?}", trivia_exists);
    let mut inserter = match manager.get_insert::<Trivial>(Trivial::table_name()).await {
        Ok(inserter) => inserter,
        Err(e) => {
            tracing::error!("Failed to create inserter for Trivial: {}", e);
            ctx.say("Failed to update trivia game. Please try again later.")
                .await?;
            return Ok(());
        }
    };
    trivia_exists.sign = -1; // Set sign to -1 to indicate an update
    inserter.write(&trivia_exists.clone()).await?;
    // Update the trivia game with provided options
    if let Some(name) = name {
        trivia_exists.name = name;
    }
    if let Some(description) = description {
        trivia_exists.description = description;
    }
    if let Some(random_question) = random_question {
        trivia_exists.random_question = random_question;
    }
    if let Some(role_ping) = role_ping {
        trivia_exists.role_ping = role_ping.id.get();
    }
    if let Some(role_ping_enabled) = role_ping_enabled {
        trivia_exists.role_ping_enabled = role_ping_enabled;
    }
    if let Some(reward_kind) = reward_kind {
        trivia_exists.reward_kind = reward_kind;
    }
    if let Some(reward_amount) = reward_amount {
        trivia_exists.reward_amount = reward_amount;
    }
    if let Some(taken_into_account) = taken_into_account {
        trivia_exists.taken_into_account = taken_into_account;
    }
    if let Some(cron) = cron {
        match Cron::new(&cron).parse() {
            Ok(_) => {}
            Err(e) => {
                ctx.say(format!("Invalid cron format: {}", e)).await?;
                return Ok(());
            }
        };
        trivia_exists.question_asked = cron;
    }
    if let Some(cron_answer) = cron_answer {
        match Cron::new(&cron_answer).parse() {
            Ok(_) => {}
            Err(e) => {
                ctx.say(format!("Invalid cron answer format: {}", e))
                    .await?;
                return Ok(());
            }
        };
        trivia_exists.answer_given = cron_answer;
    }
    trivia_exists.updated_at = chrono::Utc::now();
    trivia_exists.updater_id = ctx.author().id.get();
    debug!("Updated trivia game: {:?}", trivia_exists);
    // Set sign to 1 to indicate a successful update
    trivia_exists.sign = 1;
    // Write the updated trivia game back to the database
    inserter.write(&trivia_exists).await?;
    match inserter.end().await {
        Ok(_) => {
            info!(
                "Trivia game '{}' updated successfully in channel <#{}>.",
                trivia_exists.name, channel_id
            );
            ctx.say(format!(
                "Trivia game '{}' has been successfully updated.",
                trivia_exists.name
            ))
            .await?;
        }
        Err(e) => {
            tracing::error!("Failed to update trivia game: {}", e);
            ctx.say("Failed to update trivia game. Please try again later.")
                .await?;
            return Ok(());
        }
    }

    if let Err(e) = manager
        .execute_with_retry(&Trivial::optimize_table_sql())
        .await
    {
        tracing::error!("Failed to optimize trivia table: {}", e);
    } else {
        info!("Trivia table optimized successfully.");
    }

    Ok(())
}