use actix_web::{HttpResponse, web};
use serde::Deserialize;
use utoipa::IntoParams;
use uuid::Uuid;

use crate::api::response::{ApiErrorResponse, ApiResponse};
use crate::error::AppError;
use crate::models::prs::PrReviewRequest;
use crate::service::AppService;
use crate::session::Session;

#[derive(Debug, Deserialize, IntoParams)]
pub struct PathParams {
    pub workspace_name: String,
    pub repo_name: String,
    pub number: i64,
}

#[derive(Debug, Deserialize, IntoParams)]
pub struct ReviewerPathParams {
    pub workspace_name: String,
    pub repo_name: String,
    pub number: i64,
    pub user_id: Uuid,
}

#[derive(Debug, Deserialize, utoipa::ToSchema)]
pub struct RequestReviewersBody {
    pub reviewer_ids: Vec<Uuid>,
}

#[utoipa::path(
    get,
    path = "/api/v1/workspaces/{workspace_name}/repos/{repo_name}/prs/{number}/requested_reviewers",
    tag = "PullRequests",
    operation_id = "prListRequestedReviewers",
    params(PathParams),
    responses(
        (status = 200, description = "List of requested reviewers", body = ApiResponse<Vec<PrReviewRequest>>),
        (status = 401, description = "Unauthorized", body = ApiErrorResponse),
    ),
    security(("session_cookie" = []))
)]
pub async fn list_requested_reviewers(
    service: web::Data<AppService>,
    session: Session,
    path: web::Path<PathParams>,
) -> Result<HttpResponse, AppError> {
    let result = service
        .pr
        .pr_requested_reviewers(&session, &path.workspace_name, &path.repo_name, path.number)
        .await?;
    Ok(HttpResponse::Ok().json(ApiResponse::new(result)))
}

#[utoipa::path(
    post,
    path = "/api/v1/workspaces/{workspace_name}/repos/{repo_name}/prs/{number}/requested_reviewers",
    tag = "PullRequests",
    operation_id = "prRequestReviewers",
    params(PathParams),
    request_body(content = RequestReviewersBody),
    responses(
        (status = 201, description = "Reviewers requested", body = ApiResponse<Vec<PrReviewRequest>>),
        (status = 401, description = "Unauthorized", body = ApiErrorResponse),
    ),
    security(("session_cookie" = []))
)]
pub async fn request_reviewers(
    service: web::Data<AppService>,
    session: Session,
    path: web::Path<PathParams>,
    body: web::Json<RequestReviewersBody>,
) -> Result<HttpResponse, AppError> {
    let result = service
        .pr
        .pr_request_reviewers(
            &session,
            &path.workspace_name,
            &path.repo_name,
            path.number,
            body.reviewer_ids.clone(),
        )
        .await?;
    Ok(HttpResponse::Created().json(ApiResponse::new(result)))
}

#[utoipa::path(
    delete,
    path = "/api/v1/workspaces/{workspace_name}/repos/{repo_name}/prs/{number}/requested_reviewers/{user_id}",
    tag = "PullRequests",
    operation_id = "prRemoveRequestedReviewer",
    params(ReviewerPathParams),
    responses(
        (status = 200, description = "Reviewer removed", body = ApiResponse<String>),
        (status = 401, description = "Unauthorized", body = ApiErrorResponse),
    ),
    security(("session_cookie" = []))
)]
pub async fn remove_requested_reviewer(
    service: web::Data<AppService>,
    session: Session,
    path: web::Path<ReviewerPathParams>,
) -> Result<HttpResponse, AppError> {
    service
        .pr
        .pr_remove_requested_reviewer(
            &session,
            &path.workspace_name,
            &path.repo_name,
            path.number,
            path.user_id,
        )
        .await?;
    Ok(HttpResponse::Ok().json(ApiResponse::new("reviewer removed".to_string())))
}