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

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

use super::session::ImSession;

#[derive(Deserialize, Serialize, Clone, Debug, utoipa::ToSchema)]
pub struct CreateWebhookParams {
    pub name: String,
    pub url: String,
    pub secret: Option<String>,
    pub events: Vec<String>,
}

#[derive(Deserialize, Serialize, Clone, Debug, utoipa::ToSchema)]
pub struct UpdateWebhookParams {
    pub name: Option<String>,
    pub url: Option<String>,
    pub secret: Option<String>,
    pub events: Option<Vec<String>>,
    pub active: Option<bool>,
}

impl ImService {
    pub async fn webhook_list(
        &self,
        _ctx: &ImSession,
        channel_id: Uuid,
    ) -> Result<Vec<ChannelWebhook>, AppError> {
        sqlx::query_as::<_, ChannelWebhook>(
            "SELECT id, channel_id, name, url, secret_ciphertext, events, active, \
             last_delivery_status, last_delivery_at, created_by, created_at, updated_at \
             FROM channel_webhook 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 webhook_create(
        &self,
        ctx: &ImSession,
        channel_id: Uuid,
        params: CreateWebhookParams,
    ) -> Result<ChannelWebhook, AppError> {
        let now = chrono::Utc::now();
        sqlx::query_as::<_, ChannelWebhook>(
            "INSERT INTO channel_webhook \
             (id, channel_id, name, url, secret_ciphertext, events, active, \
              created_by, created_at, updated_at) \
             VALUES ($1, $2, $3, $4, $5, $6, true, $7, $8, $8) \
             RETURNING id, channel_id, name, url, secret_ciphertext, events, active, \
             last_delivery_status, last_delivery_at, created_by, created_at, updated_at",
        )
        .bind(Uuid::now_v7())
        .bind(channel_id)
        .bind(&params.name)
        .bind(&params.url)
        .bind(params.secret.as_deref())
        .bind(&params.events)
        .bind(ctx.user)
        .bind(now)
        .fetch_one(self.ctx.db.writer())
        .await
        .map_err(AppError::Database)
    }

    pub async fn webhook_update(
        &self,
        _ctx: &ImSession,
        webhook_id: Uuid,
        params: UpdateWebhookParams,
    ) -> Result<ChannelWebhook, AppError> {
        let now = chrono::Utc::now();
        sqlx::query_as::<_, ChannelWebhook>(
            "UPDATE channel_webhook SET \
             name = COALESCE($1, name), \
             url = COALESCE($2, url), \
             secret_ciphertext = COALESCE($3, secret_ciphertext), \
             events = COALESCE($4, events), \
             active = COALESCE($5, active), \
             updated_at = $6 \
             WHERE id = $7 \
             RETURNING id, channel_id, name, url, secret_ciphertext, events, active, \
             last_delivery_status, last_delivery_at, created_by, created_at, updated_at",
        )
        .bind(params.name.as_deref())
        .bind(params.url.as_deref())
        .bind(params.secret.as_deref())
        .bind(params.events.as_ref())
        .bind(params.active)
        .bind(now)
        .bind(webhook_id)
        .fetch_one(self.ctx.db.writer())
        .await
        .map_err(AppError::Database)
    }

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