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

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

use super::session::ImSession;

#[derive(Deserialize, Serialize, Clone, Debug, utoipa::ToSchema)]
pub struct CreateIntegrationParams {
    pub provider: String,
    pub name: String,
    pub external_workspace_id: Option<String>,
    pub internal_channel_id: Option<Uuid>,
    pub external_channel_id: Option<String>,
    pub bot_token: Option<String>,
    pub webhook_url: Option<String>,
    pub sync_direction: String,
}

#[derive(Deserialize, Serialize, Clone, Debug, utoipa::ToSchema)]
pub struct UpdateIntegrationParams {
    pub name: Option<String>,
    pub external_channel_id: Option<String>,
    pub webhook_url: Option<String>,
    pub sync_direction: Option<String>,
    pub enabled: Option<bool>,
}

impl ImService {
    pub async fn integration_list(
        &self,
        _ctx: &ImSession,
        workspace_id: Uuid,
    ) -> Result<Vec<ImIntegration>, AppError> {
        sqlx::query_as::<_, ImIntegration>(
            "SELECT id, workspace_id, provider, name, external_workspace_id, \
             internal_channel_id, external_channel_id, bot_token_ciphertext, webhook_url, \
             sync_direction, user_mapping, enabled, installed_by, last_sync_at, \
             created_at, updated_at \
             FROM im_integration WHERE workspace_id = $1 ORDER BY created_at",
        )
        .bind(workspace_id)
        .fetch_all(self.ctx.db.reader())
        .await
        .map_err(AppError::Database)
    }

    pub async fn integration_create(
        &self,
        ctx: &ImSession,
        workspace_id: Uuid,
        params: CreateIntegrationParams,
    ) -> Result<ImIntegration, AppError> {
        let now = chrono::Utc::now();
        sqlx::query_as::<_, ImIntegration>(
            "INSERT INTO im_integration \
             (id, workspace_id, provider, name, external_workspace_id, \
              internal_channel_id, external_channel_id, bot_token_ciphertext, webhook_url, \
              sync_direction, enabled, installed_by, created_at, updated_at) \
             VALUES ($1, $2, $3::provider, $4, $5, $6, $7, $8, $9, $10::sync_direction, \
              true, $11, $12, $12) \
             RETURNING id, workspace_id, provider, name, external_workspace_id, \
             internal_channel_id, external_channel_id, bot_token_ciphertext, webhook_url, \
             sync_direction, user_mapping, enabled, installed_by, last_sync_at, \
             created_at, updated_at",
        )
        .bind(Uuid::now_v7())
        .bind(workspace_id)
        .bind(&params.provider)
        .bind(&params.name)
        .bind(params.external_workspace_id.as_deref())
        .bind(params.internal_channel_id)
        .bind(params.external_channel_id.as_deref())
        .bind(params.bot_token.as_deref())
        .bind(params.webhook_url.as_deref())
        .bind(&params.sync_direction)
        .bind(ctx.user)
        .bind(now)
        .fetch_one(self.ctx.db.writer())
        .await
        .map_err(AppError::Database)
    }

    pub async fn integration_update(
        &self,
        _ctx: &ImSession,
        integration_id: Uuid,
        params: UpdateIntegrationParams,
    ) -> Result<ImIntegration, AppError> {
        let now = chrono::Utc::now();
        sqlx::query_as::<_, ImIntegration>(
            "UPDATE im_integration SET \
             name = COALESCE($1, name), \
             external_channel_id = COALESCE($2, external_channel_id), \
             webhook_url = COALESCE($3, webhook_url), \
             sync_direction = COALESCE($4::sync_direction, sync_direction), \
             enabled = COALESCE($5, enabled), \
             updated_at = $6 \
             WHERE id = $7 \
             RETURNING id, workspace_id, provider, name, external_workspace_id, \
             internal_channel_id, external_channel_id, bot_token_ciphertext, webhook_url, \
             sync_direction, user_mapping, enabled, installed_by, last_sync_at, \
             created_at, updated_at",
        )
        .bind(params.name.as_deref())
        .bind(params.external_channel_id.as_deref())
        .bind(params.webhook_url.as_deref())
        .bind(params.sync_direction.as_deref())
        .bind(params.enabled)
        .bind(now)
        .bind(integration_id)
        .fetch_one(self.ctx.db.writer())
        .await
        .map_err(AppError::Database)
    }

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