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

use crate::api::response::{ApiErrorResponse, ApiResponse};
use crate::error::AppError;
use crate::models::wiki::WikiPage;
use crate::service::AppService;
use crate::service::wiki::core::UpdateWikiPageParams;
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,
    /// Wiki page slug (URL-friendly identifier)
    pub slug: String,
}

/// Update a wiki page
///
/// Updates an existing wiki page's title, content, or both.
/// Requires at least Member role in the repository.
///
/// A new revision is automatically created with the changes.
/// Optionally include a commit message to describe the changes.
///
/// All fields are optional; only provided fields are updated.
/// Returns the updated wiki page.
#[utoipa::path(
    put,
    path = "/api/v1/workspaces/{workspace_name}/repos/{repo_name}/wiki/{slug}",
    tag = "Wiki",
    operation_id = "wikiUpdatePage",
    params(PathParams),
    request_body(
        content = UpdateWikiPageParams,
        description = "Wiki page update parameters (all fields optional)",
        content_type = "application/json"
    ),
    responses(
        (status = 200, description = "Wiki page updated successfully.", body = ApiResponse<WikiPage>),
        (status = 400, description = "Invalid parameters", body = ApiErrorResponse),
        (status = 401, description = "Authentication required or session expired", body = ApiErrorResponse),
        (status = 403, description = "Insufficient permissions (requires Member role or higher)", body = ApiErrorResponse),
        (status = 404, description = "Wiki page, repository, or workspace not found", body = ApiErrorResponse),
        (status = 500, description = "Internal server error", body = ApiErrorResponse),
    ),
    security(("session_cookie" = []))
)]
pub async fn update_page(
    service: web::Data<AppService>,
    session: Session,
    path: web::Path<PathParams>,
    params: web::Json<UpdateWikiPageParams>,
) -> Result<HttpResponse, AppError> {
    let page = service
        .repo
        .wiki_update_page(
            &session,
            &path.workspace_name,
            &path.repo_name,
            &path.slug,
            params.into_inner(),
        )
        .await?;
    Ok(HttpResponse::Ok().json(ApiResponse::new(page)))
}