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

use crate::api::response::{ApiErrorResponse, ApiResponse};
use crate::error::AppError;
use crate::models::repos::Repo;
use crate::service::AppService;
use crate::service::repo::core::UpdateRepoParams;
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,
}

/// Update a repository
///
/// Updates repository metadata such as name, description, visibility, and default branch.
/// Requires Admin role or higher in the repository.
///
/// Update rules:
/// - name: Must be unique within workspace if changed (1-100 characters)
/// - description: Max 500 characters
/// - visibility: "public", "private", or "internal" (workspace owners can restrict public repos)
/// - default_branch: Must be an existing branch name
///
/// All fields are optional; only provided fields are updated.
/// Returns the updated repository with full metadata.
#[utoipa::path(
    put,
    path = "/api/v1/workspaces/{workspace_name}/repos/{repo_name}",
    tag = "Repos",
    operation_id = "repoUpdate",
    params(PathParams),
    request_body(
        content = UpdateRepoParams,
        description = "Repository update parameters (all fields optional)",
        content_type = "application/json"
    ),
    responses(
        (status = 200, description = "Repository updated successfully. Returns the updated repository with full metadata.", body = ApiResponse<Repo>),
        (status = 400, description = "Invalid parameters: name too long, invalid characters, default branch doesn't exist, or public repos disabled", body = ApiErrorResponse),
        (status = 401, description = "Authentication required or session expired", body = ApiErrorResponse),
        (status = 403, description = "Insufficient permissions (requires Admin role or higher)", body = ApiErrorResponse),
        (status = 404, description = "Repository or workspace not found", body = ApiErrorResponse),
        (status = 409, description = "Repository name already exists in the workspace", body = ApiErrorResponse),
        (status = 500, description = "Internal server error", body = ApiErrorResponse),
    ),
    security(
        ("session_cookie" = [])
    )
)]
pub async fn update(
    service: web::Data<AppService>,
    session: Session,
    path: web::Path<PathParams>,
    params: web::Json<UpdateRepoParams>,
) -> Result<HttpResponse, AppError> {
    let repo = service
        .repo
        .repo_update(
            &session,
            &path.workspace_name,
            &path.repo_name,
            params.into_inner(),
        )
        .await?;

    Ok(HttpResponse::Ok().json(ApiResponse::new(repo)))
}