//! Regression test: a case whose recordings are all `.m4a.failed`
//! (permanent transcription failures — ffmpeg corrupt audio or Whisper
//! 4xx) must produce an `OnelinerState::Empty` automatically, so the UI
//! has a durable terminal state instead of relying on the on-render
//! `compute_oneliner_display` fallback.
//!
//! The historical bug path: `.m4a.failed`-only cases were skipped by the
//! recovery scan (`has_any_transcript` looked for `*.transcript.txt`
//! only), so `update_oneliner` never ran, so no `oneliner.json` was
//! written. The UI masked the symptom with its `non_failed_count == 0`
//! fallback — but a future refactor of that fallback would regress the
//! case. The fix makes `has_any_transcript` count `.m4a.failed` too, so
//! `update_oneliner` runs, sees no content transcripts, and settles the
//! case to `Empty` through the same terminal branch used for silent-only
//! cases.

mod common;

use std::sync::Arc;
use std::sync::atomic::{AtomicBool, Ordering};
use std::time::Duration;

use doctate_common::oneliners::OnelinerState;
use doctate_server::events;
use doctate_server::gazetteer::Gazetteer;
use doctate_server::{
    AnalyzeBusy, OnelinerHealBusy, PipelineState, TranscribeBusy, WorkerBusy, analyze, transcribe,
};
use tempfile::tempdir;
use wiremock::matchers::{method, path as wm_path};
use wiremock::{Mock, MockServer, ResponseTemplate};

use common::{ONELINER_FILENAME, TestConfig};

#[tokio::test]
async fn failed_only_case_settles_to_empty_without_llm_call() {
    let data = tempdir().unwrap();
    let slug = "dr_test";
    let user_root = data.path().join(slug);
    let case_dir = user_root.join("case-failed");
    std::fs::create_dir_all(&case_dir).unwrap();
    // Seed: only a `.m4a.failed` file. No transcript, no plain .m4a.
    std::fs::write(case_dir.join("2026-04-15T20-30-00Z.m4a.failed"), b"x").unwrap();

    // Ollama must NOT be called — nothing to summarize for a failed-only
    // case. `.expect(0)` fails the test (on MockServer drop) if any
    // request arrived.
    let mock = MockServer::start().await;
    Mock::given(method("POST"))
        .and(wm_path("/api/chat"))
        .respond_with(ResponseTemplate::new(200))
        .expect(0)
        .mount(&mock)
        .await;

    let config = TestConfig::new()
        .with_data_path(data.path().to_path_buf())
        .with_ollama(mock.uri())
        .build();

    let vocab = Arc::new(Gazetteer::empty());
    let events_tx = events::channel();
    let http_client = reqwest::Client::new();
    let (tx_a, _rx_a) = analyze::channel();
    let (tx_t, _rx_t) = transcribe::channel();

    let heal_busy: WorkerBusy = Arc::new(AtomicBool::new(false));
    let pipeline = PipelineState {
        analyze_busy: AnalyzeBusy(Arc::new(AtomicBool::new(false))),
        analyze_tx: tx_a,
        transcribe_busy: TranscribeBusy(Arc::new(AtomicBool::new(false))),
        transcribe_tx: tx_t,
        oneliner_heal_busy: OnelinerHealBusy(heal_busy.clone()),
    };

    pipeline
        .heal_orphans_if_idle(&user_root, slug, &http_client, &config, &vocab, &events_tx)
        .await;

    // Heal spawn drops the busy flag on completion — poll until idle.
    let start = std::time::Instant::now();
    while heal_busy.load(Ordering::Acquire) {
        if start.elapsed() > Duration::from_secs(5) {
            panic!("oneliner heal did not finish within 5s");
        }
        tokio::time::sleep(Duration::from_millis(25)).await;
    }

    let path = case_dir.join(ONELINER_FILENAME);
    assert!(
        path.exists(),
        "expected oneliner.json to be written for failed-only case"
    );
    let bytes = std::fs::read(&path).unwrap();
    let state: OnelinerState = serde_json::from_slice(&bytes).unwrap();
    assert!(
        matches!(state, OnelinerState::Empty { .. }),
        "expected OnelinerState::Empty, got {state:?}"
    );

    // Mock.drop() runs here — `.expect(0)` panics if Ollama was touched.
}