use serde::{Deserialize, Serialize};
use uuid::Uuid;

use crate::error::AppError;
use crate::models::channels::ChannelSlashCommand;
use crate::service::ImService;

use super::session::ImSession;

#[derive(Deserialize, Serialize, Clone, Debug, utoipa::ToSchema)]
pub struct CreateSlashCommandParams {
    pub command: String,
    pub description: Option<String>,
    pub request_url: String,
    pub secret: Option<String>,
    pub scopes: Vec<String>,
}

#[derive(Deserialize, Serialize, Clone, Debug, utoipa::ToSchema)]
pub struct UpdateSlashCommandParams {
    pub command: Option<String>,
    pub description: Option<String>,
    pub request_url: Option<String>,
    pub secret: Option<String>,
    pub scopes: Option<Vec<String>>,
    pub enabled: Option<bool>,
}

impl ImService {
    pub async fn slash_command_list(
        &self,
        _ctx: &ImSession,
        channel_id: Uuid,
    ) -> Result<Vec<ChannelSlashCommand>, AppError> {
        sqlx::query_as::<_, ChannelSlashCommand>(
            "SELECT id, channel_id, workspace_id, command, description, request_url, \
             secret_ciphertext, scopes, enabled, created_by, created_at, updated_at \
             FROM channel_slash_command WHERE channel_id = $1 ORDER BY created_at",
        )
        .bind(channel_id)
        .fetch_all(self.ctx.db.reader())
        .await
        .map_err(AppError::Database)
    }

    pub async fn slash_command_create(
        &self,
        ctx: &ImSession,
        channel_id: Uuid,
        workspace_id: Uuid,
        params: CreateSlashCommandParams,
    ) -> Result<ChannelSlashCommand, AppError> {
        let now = chrono::Utc::now();
        sqlx::query_as::<_, ChannelSlashCommand>(
            "INSERT INTO channel_slash_command \
             (id, channel_id, workspace_id, command, description, request_url, \
              secret_ciphertext, scopes, enabled, created_by, created_at, updated_at) \
             VALUES ($1, $2, $3, $4, $5, $6, $7, $8, true, $9, $10, $10) \
             RETURNING id, channel_id, workspace_id, command, description, request_url, \
             secret_ciphertext, scopes, enabled, created_by, created_at, updated_at",
        )
        .bind(Uuid::now_v7())
        .bind(channel_id)
        .bind(workspace_id)
        .bind(&params.command)
        .bind(params.description.as_deref())
        .bind(&params.request_url)
        .bind(params.secret.as_deref())
        .bind(&params.scopes)
        .bind(ctx.user)
        .bind(now)
        .fetch_one(self.ctx.db.writer())
        .await
        .map_err(AppError::Database)
    }

    pub async fn slash_command_update(
        &self,
        _ctx: &ImSession,
        command_id: Uuid,
        params: UpdateSlashCommandParams,
    ) -> Result<ChannelSlashCommand, AppError> {
        let now = chrono::Utc::now();
        sqlx::query_as::<_, ChannelSlashCommand>(
            "UPDATE channel_slash_command SET \
             command = COALESCE($1, command), \
             description = COALESCE($2, description), \
             request_url = COALESCE($3, request_url), \
             secret_ciphertext = COALESCE($4, secret_ciphertext), \
             scopes = COALESCE($5, scopes), \
             enabled = COALESCE($6, enabled), \
             updated_at = $7 \
             WHERE id = $8 \
             RETURNING id, channel_id, workspace_id, command, description, request_url, \
             secret_ciphertext, scopes, enabled, created_by, created_at, updated_at",
        )
        .bind(params.command.as_deref())
        .bind(params.description.as_deref())
        .bind(params.request_url.as_deref())
        .bind(params.secret.as_deref())
        .bind(params.scopes.as_ref())
        .bind(params.enabled)
        .bind(now)
        .bind(command_id)
        .fetch_one(self.ctx.db.writer())
        .await
        .map_err(AppError::Database)
    }

    pub async fn slash_command_delete(
        &self,
        _ctx: &ImSession,
        command_id: Uuid,
    ) -> Result<(), AppError> {
        sqlx::query("DELETE FROM channel_slash_command WHERE id = $1")
            .bind(command_id)
            .execute(self.ctx.db.writer())
            .await
            .map_err(AppError::Database)?;
        Ok(())
    }
}