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

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

#[derive(Debug, Deserialize, IntoParams)]
pub struct PathParams {
    /// Workspace name (unique identifier)
    pub workspace_name: String,
    /// Repository name (unique within the workspace)
    pub repo_name: String,
    /// PR number (unique within the repository)
    pub number: i64,
}

/// Get PR status summary
///
/// Returns the current status of a PR including checks state, mergeability,
/// approval count, and file change statistics.
/// Requires read access to the repository.
#[utoipa::path(
    get,
    path = "/api/v1/workspaces/{workspace_name}/repos/{repo_name}/prs/{number}/status",
    tag = "Pull Requests",
    operation_id = "prGetStatus",
    params(PathParams),
    responses(
        (status = 200, description = "PR status retrieved successfully.", body = ApiResponse<PrStatus>),
        (status = 401, description = "Authentication required or session expired", body = ApiErrorResponse),
        (status = 403, description = "Insufficient permissions", body = ApiErrorResponse),
        (status = 404, description = "PR or status not found", body = ApiErrorResponse),
        (status = 500, description = "Internal server error", body = ApiErrorResponse),
    ),
    security(("session_cookie" = []))
)]
pub async fn get_status(
    service: web::Data<AppService>,
    session: Session,
    path: web::Path<PathParams>,
) -> Result<HttpResponse, AppError> {
    let status = service
        .pr
        .pr_status(&session, &path.workspace_name, &path.repo_name, path.number)
        .await?;
    Ok(HttpResponse::Ok().json(ApiResponse::new(status)))
}