use std::collections::HashMap;
use std::sync::Arc;

use axum::body::Body;
use axum::http::{Request, StatusCode};
use tower::util::ServiceExt;

use doctate_server::config::{Config, User};

fn test_config() -> Arc<Config> {
    let data_path = std::env::temp_dir().join(format!(
        "doctate-web-test-{}-{}",
        std::process::id(),
        uuid::Uuid::new_v4()
    ));
    Arc::new(Config {
        server_port: 3000,
        data_path,
        log_level: "info".into(),
        log_path: "/tmp/doctate-test/logs".into(),
        log_max_days: 90,
        users: vec![User {
            slug: "dr_test".into(),
            api_key: "test-key".into(),
            web_password: "unused".into(),
            role: "doctor".into(),
        }],
        api_keys: HashMap::from([("test-key".into(), "dr_test".into())]),
        retention_audio_days: 30,
        retention_transcript_days: 30,
        retention_document_days: 0,
        whisper_url: "http://localhost:10300".into(),
        whisper_timeout_seconds: 120,
        ollama_url: "http://localhost:11434".into(),
        ollama_model: "gemma3:4b".into(),
        ollama_keep_alive: 0,
        llm_url: String::new(),
        llm_api_key: String::new(),
        llm_model: String::new(),
        llm_temperature: 0.0,
        session_timeout_hours: 8,
    })
}

async fn body_to_string(response: axum::response::Response) -> String {
    let bytes = axum::body::to_bytes(response.into_body(), usize::MAX)
        .await
        .unwrap();
    String::from_utf8(bytes.to_vec()).unwrap()
}

#[tokio::test]
async fn web_index_empty() {
    let config = test_config();
    let app = doctate_server::create_router(config);

    let response = app
        .oneshot(
            Request::builder()
                .uri("/web/")
                .body(Body::empty())
                .unwrap(),
        )
        .await
        .unwrap();

    assert_eq!(response.status(), StatusCode::OK);
    let body = body_to_string(response).await;
    assert!(body.contains("No cases found"));
}

#[tokio::test]
async fn web_index_shows_cases() {
    let config = test_config();
    let data_path = config.data_path.clone();

    // Pre-create cases on disk
    let case1 = "550e8400-e29b-41d4-a716-446655440000";
    let case2 = "660e8400-e29b-41d4-a716-446655440000";

    let open_case = data_path.join("dr_test/open").join(case1);
    std::fs::create_dir_all(&open_case).unwrap();
    std::fs::write(
        open_case.join("2026-04-13T10-30-00Z.m4a"),
        b"fake audio 1",
    )
    .unwrap();

    let done_case = data_path.join("dr_test/done").join(case2);
    std::fs::create_dir_all(&done_case).unwrap();
    std::fs::write(
        done_case.join("2026-04-12T09-00-00Z.m4a"),
        b"fake audio 2",
    )
    .unwrap();
    std::fs::write(
        done_case.join("2026-04-12T09-00-00Z.transcript.txt"),
        "Herzkatheter ohne Befund.",
    )
    .unwrap();

    let app = doctate_server::create_router(config);
    let response = app
        .oneshot(
            Request::builder()
                .uri("/web/")
                .body(Body::empty())
                .unwrap(),
        )
        .await
        .unwrap();

    assert_eq!(response.status(), StatusCode::OK);
    let body = body_to_string(response).await;

    assert!(body.contains(case1));
    assert!(body.contains(case2));
    assert!(body.contains("dr_test"));
    assert!(body.contains("<audio"));
    assert!(body.contains("2026-04-13T10-30-00Z.m4a"));
    // case1 has no transcript → pending placeholder
    assert!(body.contains("Transcription pending"));
    // case2 has a transcript → rendered
    assert!(body.contains("Herzkatheter ohne Befund."));

    let _ = std::fs::remove_dir_all(&data_path);
}

#[tokio::test]
async fn web_audio_serves_file() {
    let config = test_config();
    let data_path = config.data_path.clone();

    let case_id = "770e8400-e29b-41d4-a716-446655440000";
    let case_dir = data_path.join("dr_test/open").join(case_id);
    std::fs::create_dir_all(&case_dir).unwrap();

    let audio_bytes = b"fake audio content for test";
    let filename = "2026-04-13T10-30-00Z.m4a";
    std::fs::write(case_dir.join(filename), audio_bytes).unwrap();

    let app = doctate_server::create_router(config);
    let response = app
        .oneshot(
            Request::builder()
                .uri(format!("/web/audio/dr_test/{case_id}/{filename}"))
                .body(Body::empty())
                .unwrap(),
        )
        .await
        .unwrap();

    assert_eq!(response.status(), StatusCode::OK);
    assert_eq!(
        response
            .headers()
            .get("content-type")
            .unwrap()
            .to_str()
            .unwrap(),
        "audio/mp4"
    );

    let bytes = axum::body::to_bytes(response.into_body(), usize::MAX)
        .await
        .unwrap();
    assert_eq!(&bytes[..], audio_bytes);

    let _ = std::fs::remove_dir_all(&data_path);
}

#[tokio::test]
async fn web_audio_path_traversal_rejected() {
    let config = test_config();
    let app = doctate_server::create_router(config);

    let response = app
        .oneshot(
            Request::builder()
                .uri("/web/audio/..%2Fetc/550e8400-e29b-41d4-a716-446655440000/foo.m4a")
                .body(Body::empty())
                .unwrap(),
        )
        .await
        .unwrap();

    assert_eq!(response.status(), StatusCode::BAD_REQUEST);
}

#[tokio::test]
async fn web_audio_invalid_case_id_rejected() {
    let config = test_config();
    let app = doctate_server::create_router(config);

    let response = app
        .oneshot(
            Request::builder()
                .uri("/web/audio/dr_test/not-a-uuid/foo.m4a")
                .body(Body::empty())
                .unwrap(),
        )
        .await
        .unwrap();

    assert_eq!(response.status(), StatusCode::BAD_REQUEST);
}

#[tokio::test]
async fn web_audio_nonexistent_file_returns_404() {
    let config = test_config();
    let app = doctate_server::create_router(config);

    let response = app
        .oneshot(
            Request::builder()
                .uri("/web/audio/dr_test/550e8400-e29b-41d4-a716-446655440000/missing.m4a")
                .body(Body::empty())
                .unwrap(),
        )
        .await
        .unwrap();

    assert_eq!(response.status(), StatusCode::NOT_FOUND);
}