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

use crate::api::response::{ApiErrorResponse, ApiResponse};
use crate::error::AppError;
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,
    /// Branch ID (UUID)
    pub branch_id: uuid::Uuid,
}

#[derive(Debug, Deserialize, ToSchema)]
pub struct SetBranchProtectionParams {
    /// Whether to enable branch protection
    pub protected: bool,
}

/// Set branch protection
///
/// Enables or disables protection for a specific branch.
/// Requires Admin role or higher in the repository.
///
/// Effects:
/// - When enabled: prevents force pushes and branch deletion
/// - When disabled: allows force pushes and branch deletion
///
/// Returns success message on completion.
#[utoipa::path(
    put,
    path = "/api/v1/workspaces/{workspace_name}/repos/{repo_name}/branches/{branch_id}/protection",
    tag = "Repos",
    operation_id = "repoSetBranchProtection",
    params(PathParams),
    request_body(
        content = SetBranchProtectionParams,
        description = "Branch protection parameters",
        content_type = "application/json"
    ),
    responses(
        (status = 200, description = "Branch protection rules set successfully.", body = ApiResponse<String>),
        (status = 400, description = "Invalid parameters: negative approvals count or conflicting protection settings", 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, workspace, or branch not found", body = ApiErrorResponse),
        (status = 500, description = "Internal server error", body = ApiErrorResponse),
    ),
    security(
        ("session_cookie" = [])
    )
)]
pub async fn set_branch_protection(
    service: web::Data<AppService>,
    session: Session,
    path: web::Path<PathParams>,
    params: web::Json<SetBranchProtectionParams>,
) -> Result<HttpResponse, AppError> {
    service
        .repo
        .repo_set_branch_protection(
            &session,
            &path.workspace_name,
            &path.repo_name,
            path.branch_id,
            params.protected,
        )
        .await?;

    Ok(HttpResponse::Ok().json(ApiResponse::new(
        "Branch protection rules set successfully".to_string(),
    )))
}