use axum::{Json, extract::State};

use crate::{
  dto::{ScanJobResponse, ScanRequest, ScanStatusResponse},
  error::ApiError,
  state::AppState,
};

/// Trigger a scan as a background job. Returns the job ID immediately.
pub async fn trigger_scan(
  State(state): State<AppState>,
  Json(req): Json<ScanRequest>,
) -> Result<Json<ScanJobResponse>, ApiError> {
  let kind = pinakes_core::jobs::JobKind::Scan { path: req.path };
  let job_id = state.job_queue.submit(kind).await;
  Ok(Json(ScanJobResponse {
    job_id: job_id.to_string(),
  }))
}

pub async fn scan_status(
  State(state): State<AppState>,
) -> Json<ScanStatusResponse> {
  let snapshot = state.scan_progress.snapshot();
  let error_count = snapshot.errors.len();
  Json(ScanStatusResponse {
    scanning: snapshot.scanning,
    files_found: snapshot.files_found,
    files_processed: snapshot.files_processed,
    error_count,
    errors: snapshot.errors,
  })
}