//! Webhook HTTP 处理器
//!
//! 提供 Webhook 订阅的 CRUD 和投递日志查询。

use axum::{
    extract::{Extension, Path, State},
    http::StatusCode,
    Json,
};
use crate::auth::types::AuthContext;
use crate::error::SaasResult;
use crate::state::AppState;
use super::{service, types::*};

/// POST /api/v1/webhooks — 创建 Webhook 订阅
// @connected
pub async fn create_subscription(
    State(state): State<AppState>,
    Extension(ctx): Extension<AuthContext>,
    Json(req): Json<CreateWebhookRequest>,
) -> SaasResult<(StatusCode, Json<WebhookSubscription>)> {
    // 验证 URL 格式
    if req.url.is_empty() {
        return Err(crate::error::SaasError::InvalidInput("URL 不能为空".into()));
    }
    if url::Url::parse(&req.url).is_err() {
        return Err(crate::error::SaasError::InvalidInput("URL 格式无效".into()));
    }
    // 验证事件列表不为空
    if req.events.is_empty() {
        return Err(crate::error::SaasError::InvalidInput(
            "事件列表不能为空，至少需要一个事件".into(),
        ));
    }
    // 验证每个事件名称格式 (namespace.action)
    for ev in &req.events {
        if !ev.contains('.') || ev.starts_with('.') || ev.ends_with('.') {
            return Err(crate::error::SaasError::InvalidInput(
                format!("事件名称 '{}' 格式无效，应为 namespace.action 格式", ev),
            ));
        }
    }

    let sub = service::create_subscription(&state.db, &ctx.account_id, &req).await?;
    Ok((StatusCode::CREATED, Json(sub)))
}

/// GET /api/v1/webhooks — 列出 Webhook 订阅
// @connected
pub async fn list_subscriptions(
    State(state): State<AppState>,
    Extension(ctx): Extension<AuthContext>,
) -> SaasResult<Json<Vec<WebhookSubscription>>> {
    let subs = service::list_subscriptions(&state.db, &ctx.account_id).await?;
    Ok(Json(subs))
}

/// DELETE /api/v1/webhooks/:id — 删除 Webhook 订阅
// @connected
pub async fn delete_subscription(
    State(state): State<AppState>,
    Extension(ctx): Extension<AuthContext>,
    Path(id): Path<String>,
) -> SaasResult<StatusCode> {
    service::delete_subscription(&state.db, &ctx.account_id, &id).await?;
    Ok(StatusCode::NO_CONTENT)
}

/// PATCH /api/v1/webhooks/:id — 更新 Webhook 订阅
// @connected
pub async fn update_subscription(
    State(state): State<AppState>,
    Extension(ctx): Extension<AuthContext>,
    Path(id): Path<String>,
    Json(req): Json<UpdateWebhookRequest>,
) -> SaasResult<Json<WebhookSubscription>> {
    // 验证 URL 格式（如果提供了）
    if let Some(ref url) = req.url {
        if url.is_empty() {
            return Err(crate::error::SaasError::InvalidInput("URL 不能为空".into()));
        }
        if url::Url::parse(url).is_err() {
            return Err(crate::error::SaasError::InvalidInput("URL 格式无效".into()));
        }
    }
    // 验证事件名称格式（如果提供了）
    if let Some(ref events) = req.events {
        for ev in events {
            if !ev.contains('.') || ev.starts_with('.') || ev.ends_with('.') {
                return Err(crate::error::SaasError::InvalidInput(
                    format!("事件名称 '{}' 格式无效，应为 namespace.action 格式", ev),
                ));
            }
        }
    }

    let sub = service::update_subscription(&state.db, &ctx.account_id, &id, &req).await?;
    Ok(Json(sub))
}

/// GET /api/v1/webhooks/:id/deliveries — 列出投递日志
// @connected
pub async fn list_deliveries(
    State(state): State<AppState>,
    Extension(ctx): Extension<AuthContext>,
    Path(id): Path<String>,
) -> SaasResult<Json<Vec<WebhookDelivery>>> {
    let deliveries = service::list_deliveries(&state.db, &ctx.account_id, &id).await?;
    Ok(Json(deliveries))
}