//! End-to-end tests through the real router.
//!
//! The unit tests cover each spec rule in isolation; these cover the wiring —
//! status codes, headers, and the properties that only hold if the layers are
//! composed correctly (per-route body caps, rate-limit surfaces, the strict
//! schema actually reaching uploads).

use std::sync::Arc;

use axum::body::Body;
use axum::http::{Request, StatusCode};
use http_body_util::BodyExt;
use jray_server::app;
use jray_server::config::Config;
use jray_server::db::Db;
use jray_server::ratelimit::RateLimiter;
use jray_server::state::AppState;
use jray_server::tmdb::TmdbClient;
use serde_json::{json, Value};
use tower::ServiceExt;

/// A server backed by a temporary on-disk database.
///
/// On-disk rather than `:memory:` because §8's design uses a separate writer
/// connection and a read pool, and in-memory SQLite is per-connection — the
/// readers would see an empty database. Testing the real topology is the point.
struct TestServer {
    router: axum::Router,
    _dir: TempDir,
}

struct TempDir(std::path::PathBuf);

impl TempDir {
    fn new(tag: &str) -> Self {
        let mut p = std::env::temp_dir();
        // Unique per test without pulling in a tempfile dependency.
        p.push(format!("jray-test-{}-{}", tag, ulid_like()));
        std::fs::create_dir_all(&p).expect("creating temp dir");
        Self(p)
    }

    fn db_path(&self) -> String {
        self.0.join("test.db").to_string_lossy().into_owned()
    }
}

impl Drop for TempDir {
    fn drop(&mut self) {
        let _ = std::fs::remove_dir_all(&self.0);
    }
}

fn ulid_like() -> String {
    use std::sync::atomic::{AtomicU64, Ordering};
    static N: AtomicU64 = AtomicU64::new(0);
    let t = std::time::SystemTime::now()
        .duration_since(std::time::UNIX_EPOCH)
        .map(|d| d.as_nanos())
        .unwrap_or(0);
    format!("{t}-{}", N.fetch_add(1, Ordering::Relaxed))
}

impl TestServer {
    fn new(tag: &str) -> Self {
        let dir = TempDir::new(tag);
        let db = Db::open(&dir.db_path()).expect("opening database");
        let config = Arc::new(Config {
            bind: "127.0.0.1:0".into(),
            db_path: dir.db_path(),
            // No key: uploads stay `pending`, which is the correct failure mode
            // (§8) and keeps these tests free of network calls.
            tmdb_api_key: None,
            tmdb_base_url: "http://127.0.0.1:1".into(),
            trusted_proxies: Vec::new(),
            server_id: "test.example".into(),
            publish_peer_directory: true,
            contact: Some("admin@test.example".into()),
            request_timeout: std::time::Duration::from_secs(30),
            job_batch: 8,
            job_poll_interval: std::time::Duration::from_secs(3600),
        });
        let state = AppState {
            db,
            config: config.clone(),
            limiter: Arc::new(RateLimiter::new()),
            tmdb: Arc::new(TmdbClient::new(config.tmdb_base_url.clone(), None)),
        };
        Self { router: app::router(state), _dir: dir }
    }

    async fn send(&self, req: Request<Body>) -> (StatusCode, Value, axum::http::HeaderMap) {
        let resp = self.router.clone().oneshot(req).await.expect("router call");
        let status = resp.status();
        let headers = resp.headers().clone();
        let bytes = resp.into_body().collect().await.expect("reading body").to_bytes();
        let body = if bytes.is_empty() {
            Value::Null
        } else {
            serde_json::from_slice(&bytes)
                .unwrap_or(Value::String(String::from_utf8_lossy(&bytes).into_owned()))
        };
        (status, body, headers)
    }

    async fn get(&self, uri: &str) -> (StatusCode, Value, axum::http::HeaderMap) {
        self.send(Request::builder().uri(uri).body(Body::empty()).unwrap()).await
    }

    async fn post_json(
        &self,
        uri: &str,
        body: &Value,
    ) -> (StatusCode, Value, axum::http::HeaderMap) {
        self.send(
            Request::builder()
                .method("POST")
                .uri(uri)
                .header("content-type", "application/json")
                .body(Body::from(body.to_string()))
                .unwrap(),
        )
        .await
    }

    async fn post_json_auth(
        &self,
        uri: &str,
        token: &str,
        body: &Value,
    ) -> (StatusCode, Value, axum::http::HeaderMap) {
        self.send(
            Request::builder()
                .method("POST")
                .uri(uri)
                .header("content-type", "application/json")
                .header("authorization", format!("Bearer {token}"))
                .body(Body::from(body.to_string()))
                .unwrap(),
        )
        .await
    }

    /// Issues an anonymous bearer capability (§5a).
    async fn token(&self) -> String {
        let (status, body, _) = self.post_json("/api/v1/tokens", &json!({})).await;
        assert_eq!(status, StatusCode::OK, "token issue failed: {body}");
        body["token"].as_str().expect("token in response").to_string()
    }
}

fn movie_manifest(tmdb_id: &str, runtime: f64) -> Value {
    json!({
        "jmanifest_version": 2,
        "identity": { "type": "movie", "tmdb_id": tmdb_id, "title": "The Death of Stalin",
                      "year": 2017 },
        "cut": { "runtime_sec": runtime },
        "extraction": { "sample_fps": 5, "extinction_sec": 12,
                        "pipeline_version": "scene-actor-extraction 0.4.1",
                        "gallery_scope": "global" },
        "actors": [
            { "name": "Steve Buscemi", "tmdb_id": "884", "scenes": [{"start":191.6,"end":209.2},{"start":438.2,"end":465.6}] },
            { "name": "Michael Palin", "tmdb_id": "11007", "scenes": [{"start":300.0,"end":320.0}] }
        ]
    })
}

// ---------------------------------------------------------------------------
// Health and readiness
// ---------------------------------------------------------------------------

#[tokio::test]
async fn health_is_unauthenticated() {
    let s = TestServer::new("health");
    let (status, body, _) = s.get("/health").await;
    assert_eq!(status, StatusCode::OK);
    assert_eq!(body["status"], "ok");
}

#[tokio::test]
async fn readiness_reports_database_and_tmdb_configuration() {
    // §8: TMDB is a hard dependency for UR-3, so its absence is worth surfacing.
    let s = TestServer::new("ready");
    let (status, body, _) = s.get("/ready").await;
    assert_eq!(status, StatusCode::OK);
    assert_eq!(body["status"], "ready");
    assert_eq!(body["tmdb_configured"], false);
}

// ---------------------------------------------------------------------------
// §5a — tokens
// ---------------------------------------------------------------------------

#[tokio::test]
async fn upload_without_a_token_is_rejected() {
    let s = TestServer::new("noauth");
    let (status, _, _) = s.post_json("/api/v1/manifests", &movie_manifest("504172", 6420.5)).await;
    assert_eq!(status, StatusCode::UNAUTHORIZED);
}

#[tokio::test]
async fn upload_with_an_unknown_token_is_rejected() {
    // A token the server never issued has no contributor row, and §5a stores only
    // hashes, so there is nothing to match.
    let s = TestServer::new("badauth");
    let (status, _, _) = s
        .post_json_auth("/api/v1/manifests", "jray_deadbeef", &movie_manifest("504172", 6420.5))
        .await;
    assert_eq!(status, StatusCode::UNAUTHORIZED);
}

#[tokio::test]
async fn tokens_are_issued_anonymously_and_are_distinct() {
    let s = TestServer::new("tokens");
    let a = s.token().await;
    let b = s.token().await;
    assert_ne!(a, b);
    assert!(a.starts_with("jray_"));
}

#[tokio::test]
async fn the_token_response_carries_the_contribution_licence() {
    // §5b / UR-019. There are no accounts, so token issuance is the only moment
    // a grant can be taken — a licence the server publishes but never delivers
    // is one no contributor agreed to, which is precisely the gap that leaves
    // federated replication (UR-008) without a grant flowing through it.
    let s = TestServer::new("token-licence");
    let (status, body, _) = s.post_json("/api/v1/tokens", &json!({})).await;
    assert_eq!(status, StatusCode::OK, "body: {body}");

    assert_eq!(body["contribution_license"].as_str(), Some("CC0-1.0"));

    let terms = body["contribution_terms"].as_str().expect("terms in response");
    assert!(terms.contains("CC0 1.0"), "terms must name the licence: {terms}");
    // The scope limit is the operative half: it must be impossible to read the
    // grant as covering the film rather than the manifest.
    assert!(terms.contains("manifest only"), "terms must bound the grant to the manifest: {terms}");
}

// ---------------------------------------------------------------------------
// §6 — upload validation
// ---------------------------------------------------------------------------

#[tokio::test]
async fn valid_upload_is_accepted_as_pending() {
    // §6 stage 3: accepted with `202` and held unlisted until the cast check.
    let s = TestServer::new("upload-ok");
    let token = s.token().await;
    let (status, body, _) =
        s.post_json_auth("/api/v1/manifests", &token, &movie_manifest("504172", 6420.5)).await;
    assert_eq!(status, StatusCode::ACCEPTED, "body: {body}");
    assert_eq!(body["status"], "pending");
    assert!(body["manifest_id"].is_string());
}

#[tokio::test]
async fn a_pending_manifest_is_not_served() {
    // The property that makes §6 stage 3 meaningful: an unverified manifest is
    // not served to anyone in the meantime.
    let s = TestServer::new("pending-hidden");
    let token = s.token().await;
    let (_, body, _) =
        s.post_json_auth("/api/v1/manifests", &token, &movie_manifest("504172", 6420.5)).await;
    let id = body["manifest_id"].as_str().unwrap();

    let (status, _, _) = s.get("/api/v1/manifests/movie?tmdb_id=504172").await;
    assert_eq!(status, StatusCode::NOT_FOUND);

    let (status, _, _) = s.get(&format!("/api/v1/manifests/{id}")).await;
    assert_eq!(status, StatusCode::NOT_FOUND);

    // But its status is pollable (§4).
    let (status, body, _) = s.get(&format!("/api/v1/manifests/{id}/status")).await;
    assert_eq!(status, StatusCode::OK);
    assert_eq!(body["status"], "pending");
}

/// TRACES: DR-001 | SR-004
#[tokio::test]
async fn unknown_field_anywhere_is_rejected_with_400() {
    // §6 stage 2, enforced by `deny_unknown_fields` on every DTO.
    let s = TestServer::new("strict");
    let token = s.token().await;

    let mut m = movie_manifest("504172", 6420.5);
    m["surprise"] = json!("payload");
    let (status, body, _) = s.post_json_auth("/api/v1/manifests", &token, &m).await;
    assert_eq!(status, StatusCode::BAD_REQUEST);
    assert!(
        body["message"].as_str().unwrap_or("").contains("surprise"),
        "the error should name the offending field: {body}"
    );

    // Nested, too — `extra="forbid"` applies at every level (§5a).
    let mut m = movie_manifest("504172", 6420.5);
    m["cut"]["extra"] = json!(1);
    let (status, _, _) = s.post_json_auth("/api/v1/manifests", &token, &m).await;
    assert_eq!(status, StatusCode::BAD_REQUEST);
}

#[tokio::test]
async fn contributor_local_identifiers_are_rejected_not_ignored() {
    // §1/§6: `movie` leaks the contributor's directory layout and `jellyfin_id` is
    // a GUID from their database. Both must be *rejected on upload*, so a client
    // that forgets to strip them gets a hard 400 naming the field rather than
    // quietly publishing them.
    let s = TestServer::new("strip");
    let token = s.token().await;

    let mut m = movie_manifest("504172", 6420.5);
    m["movie"] = json!("/data/movies/The.Death.of.Stalin.2017.mkv");
    let (status, body, _) = s.post_json_auth("/api/v1/manifests", &token, &m).await;
    assert_eq!(status, StatusCode::BAD_REQUEST);
    assert!(body["message"].as_str().unwrap_or("").contains("movie"), "{body}");

    let mut m = movie_manifest("504172", 6420.5);
    m["actors"][0]["jellyfin_id"] = json!("a1b2c3d4e5f6");
    let (status, body, _) = s.post_json_auth("/api/v1/manifests", &token, &m).await;
    assert_eq!(status, StatusCode::BAD_REQUEST);
    assert!(body["message"].as_str().unwrap_or("").contains("jellyfin_id"), "{body}");
}

/// TRACES: UR-015 | SR-003
#[tokio::test]
async fn the_withdrawn_anneal_sec_field_is_rejected() {
    // `anneal_sec` was withdrawn in the SR-003 bump: presence now follows track
    // extent, so a track survives its own gaps and there is nothing to anneal
    // (`scene-actor-extraction` AR-012/AR-013).
    //
    // Rejecting rather than ignoring it is the point. A manifest still carrying
    // the field was produced by a pipeline whose window semantics differ from
    // what this server now assumes, and silently accepting it would store
    // timings whose meaning we cannot vouch for.
    let s = TestServer::new("anneal-withdrawn");
    let token = s.token().await;

    let mut m = movie_manifest("504172", 6420.5);
    m["extraction"]["anneal_sec"] = json!(3);
    let (status, body, _) = s.post_json_auth("/api/v1/manifests", &token, &m).await;
    assert_eq!(status, StatusCode::BAD_REQUEST);
    assert!(
        body["message"].as_str().unwrap_or("").contains("anneal_sec"),
        "the error should name the withdrawn field: {body}"
    );
}

/// TRACES: UR-015, UR-016 | SR-003
#[tokio::test]
async fn the_schema_bump_fields_round_trip() {
    // `extinction_sec` and `gallery_scope` are the SR-003 additions. They are
    // stored and reconstructed, since §7 ranks on scope and both are provenance
    // a consumer may want.
    let s = TestServer::new("bump-fields");
    let token = s.token().await;

    let m = movie_manifest("504172", 6420.5);
    assert_eq!(m["extraction"]["gallery_scope"], "global");
    let (status, body, _) = s.post_json_auth("/api/v1/manifests", &token, &m).await;
    assert_eq!(status, StatusCode::ACCEPTED, "{body}");

    // An unrecognised scope is a closed-vocabulary violation, not a free string.
    let mut bad = movie_manifest("504173", 6420.5);
    bad["extraction"]["gallery_scope"] = json!("enormous");
    let (status, _, _) = s.post_json_auth("/api/v1/manifests", &token, &bad).await;
    assert_eq!(status, StatusCode::BAD_REQUEST, "gallery_scope is a closed enum");
}

#[tokio::test]
async fn per_window_belief_and_route_round_trip() {
    // SR-003 gives each window its posterior and identification route
    // (extraction AR-017). They are stored and served — a consumer needs them to
    // know how much to trust a window — but they are never part of identity.
    let s = TestServer::new("belief");
    let token = s.token().await;

    let mut m = movie_manifest("504172", 6420.5);
    m["actors"][0]["scenes"] = json!([
        { "start": 191.6, "end": 209.2, "belief": 0.98, "route": "live" },
        { "start": 438.2, "end": 465.6, "belief": 0.81, "route": "deferred" }
    ]);
    let (status, body, _) = s.post_json_auth("/api/v1/manifests", &token, &m).await;
    assert_eq!(status, StatusCode::ACCEPTED, "{body}");

    // A belief outside [0, 1] is not a probability. Bounded rather than merely
    // stored, because §5a's Threat 1 argument rests on every accepted value
    // being bounded — an unbounded float is a 64-bit channel.
    for bad in [-0.1, 1.5] {
        let mut m = movie_manifest("504173", 6420.5);
        m["actors"][0]["scenes"] = json!([{ "start": 1.0, "end": 2.0, "belief": bad }]);
        let (status, body, _) = s.post_json_auth("/api/v1/manifests", &token, &m).await;
        assert_eq!(status, StatusCode::BAD_REQUEST, "belief {bad}: {body}");
    }

    // `route` is a closed vocabulary, so an invented value cannot be stored.
    let mut m = movie_manifest("504174", 6420.5);
    m["actors"][0]["scenes"] = json!([{ "start": 1.0, "end": 2.0, "route": "telepathy" }]);
    let (status, _, _) = s.post_json_auth("/api/v1/manifests", &token, &m).await;
    assert_eq!(status, StatusCode::BAD_REQUEST);
}

#[tokio::test]
async fn an_unknown_manifest_version_is_rejected() {
    // UR-014 / SR-003: a consumer encountering an unknown `schema_version`
    // refuses or warns; it never guesses.
    let s = TestServer::new("version");
    let token = s.token().await;

    // Version 1 is the one that matters: SR-003 settled on a **flag day**, not a
    // dual-accept period, so the immediately-previous version is refused exactly
    // like a nonsensical one. A v1 read path would be the one nobody exercises,
    // and so the one that rots while being dragged through every later change.
    for version in [0, 1, 3, 99] {
        let mut m = movie_manifest("504172", 6420.5);
        m["jmanifest_version"] = json!(version);
        let (status, body, _) = s.post_json_auth("/api/v1/manifests", &token, &m).await;
        assert_eq!(status, StatusCode::BAD_REQUEST, "version {version}: {body}");
        assert!(
            body["message"].as_str().unwrap_or("").contains("jmanifest_version"),
            "should name the field: {body}"
        );
    }
}

#[tokio::test]
async fn missing_runtime_is_rejected() {
    // §2: `cut.runtime_sec` is required — the primary alignment guard.
    let s = TestServer::new("no-runtime");
    let token = s.token().await;
    let mut m = movie_manifest("504172", 6420.5);
    m["cut"] = json!({ "container_duration_sec": 6420.5 });
    let (status, _, _) = s.post_json_auth("/api/v1/manifests", &token, &m).await;
    assert_eq!(status, StatusCode::BAD_REQUEST);
}

#[tokio::test]
async fn empty_actor_list_is_rejected() {
    // §6: 15 of the 331 corpus files have empty actor lists — extraction
    // failures, not contributions.
    let s = TestServer::new("empty-actors");
    let token = s.token().await;
    let mut m = movie_manifest("504172", 6420.5);
    m["actors"] = json!([]);
    let (status, _, _) = s.post_json_auth("/api/v1/manifests", &token, &m).await;
    assert_eq!(status, StatusCode::BAD_REQUEST);
}

#[tokio::test]
async fn smuggled_payload_in_an_actor_name_is_rejected() {
    // §5a: the character class defeats base64/hex smuggling, which needs digits
    // and padding characters. This is the last free-text channel, so it is worth
    // asserting end-to-end and not only in the unit tests.
    let s = TestServer::new("smuggle");
    let token = s.token().await;
    for payload in [
        "SGVsbG8gd29ybGQgdGhpcyBpcyBhIHBheWxvYWQ=",
        "4d5a90000300000004000000ffff0000",
        "<script>alert(1)</script>",
        "http://evil.example/x",
    ] {
        let mut m = movie_manifest("504172", 6420.5);
        m["actors"][0]["name"] = json!(payload);
        let (status, _, _) = s.post_json_auth("/api/v1/manifests", &token, &m).await;
        assert_eq!(status, StatusCode::BAD_REQUEST, "payload {payload:?} should be rejected");
    }
}

#[tokio::test]
async fn resubmitting_identical_content_is_not_a_duplicate_error() {
    // §9a: content addressing gives deduplication — the same manifest from the
    // same contributor is recognised rather than stored twice.
    let s = TestServer::new("dedup");
    let token = s.token().await;
    let m = movie_manifest("504172", 6420.5);
    let (first, body1, _) = s.post_json_auth("/api/v1/manifests", &token, &m).await;
    assert_eq!(first, StatusCode::ACCEPTED);
    let (second, body2, _) = s.post_json_auth("/api/v1/manifests", &token, &m).await;
    assert_eq!(second, StatusCode::OK);
    assert_eq!(body2["status"], "already_present");
    assert_eq!(body1["manifest_id"], body2["manifest_id"]);
}

#[tokio::test]
async fn oversized_body_is_rejected_by_the_route_cap() {
    // §6 stage 1: the app-level cap counts bytes as they are read, so a lying
    // `Content-Length` and a chunked upload are both safe. Here the body genuinely
    // exceeds the 2 MiB single-manifest cap.
    let s = TestServer::new("too-big");
    let token = s.token().await;

    let mut m = movie_manifest("504172", 6420.5);
    // Many actors, each with many windows — legitimate shape, illegitimate size.
    let actors: Vec<Value> = (0..400)
        .map(|i| {
            let scenes: Vec<Value> = (0..1500).map(|j| json!([j as f64, (j + 1) as f64])).collect();
            json!({ "tmdb_id": (1000 + i).to_string(), "scenes": scenes })
        })
        .collect();
    m["actors"] = json!(actors);

    let (status, _, _) = s.post_json_auth("/api/v1/manifests", &token, &m).await;
    assert_eq!(status, StatusCode::PAYLOAD_TOO_LARGE);
}

#[tokio::test]
async fn a_lying_content_length_does_not_bypass_the_cap() {
    // §6 stage 0 is explicit that `Content-Length` is a *claim by the client*: a
    // hostile client can declare 100 and send far more, so the streaming cap is
    // mandatory rather than redundant.
    let s = TestServer::new("lying-length");
    let token = s.token().await;

    let huge = "x".repeat(3 * 1024 * 1024);
    let body = format!("{{\"padding\":\"{huge}\"}}");
    let req = Request::builder()
        .method("POST")
        .uri("/api/v1/manifests")
        .header("content-type", "application/json")
        .header("authorization", format!("Bearer {token}"))
        .header("content-length", "100")
        .body(Body::from(body))
        .unwrap();

    let (status, _, _) = s.send(req).await;
    assert_ne!(
        status,
        StatusCode::ACCEPTED,
        "an oversized body must never be accepted, whatever the declared length"
    );
    assert!(
        status == StatusCode::PAYLOAD_TOO_LARGE || status == StatusCode::BAD_REQUEST,
        "unexpected status {status}"
    );
}

// ---------------------------------------------------------------------------
// §4 — exists
// ---------------------------------------------------------------------------

#[tokio::test]
async fn exists_returns_200_with_false_rather_than_404() {
    // §4: absence is a normal answer, and `404` would conflate "no manifest" with
    // "bad route" for the client.
    let s = TestServer::new("exists-absent");
    let (status, body, _) = s.get("/api/v1/manifests/exists?tmdb_id=999999").await;
    assert_eq!(status, StatusCode::OK);
    assert_eq!(body["exists"], false);
    assert!(body["manifest_id"].is_null());
}

#[tokio::test]
async fn exists_requires_identity_parameters() {
    let s = TestServer::new("exists-noid");
    let (status, _, _) = s.get("/api/v1/manifests/exists").await;
    assert_eq!(status, StatusCode::BAD_REQUEST);
}

#[tokio::test]
async fn exists_carries_rate_limit_headers() {
    // §5: responses carry `X-RateLimit-Limit`, `-Remaining` and `-Reset`.
    let s = TestServer::new("exists-headers");
    let (_, _, headers) = s.get("/api/v1/manifests/exists?tmdb_id=1").await;
    assert_eq!(headers["x-ratelimit-limit"], "600");
    assert_eq!(headers["x-ratelimit-remaining"], "599");
    assert!(headers.contains_key("x-ratelimit-reset"));
}

#[tokio::test]
async fn batch_exists_is_positional_and_capped_at_100() {
    // §4: results are positional, and the cap is what lets §5 be generous per
    // request while staying strict per item.
    let s = TestServer::new("exists-batch");
    let items: Vec<Value> = (0..3).map(|i| json!({ "tmdb_id": (100 + i).to_string() })).collect();
    let (status, body, headers) =
        s.post_json("/api/v1/manifests/exists", &json!({ "items": items })).await;
    assert_eq!(status, StatusCode::OK);
    assert_eq!(body["results"].as_array().unwrap().len(), 3);
    assert_eq!(headers["x-ratelimit-limit"], "60", "batch has its own §5 budget");

    let too_many: Vec<Value> =
        (0..101).map(|i| json!({ "tmdb_id": (100 + i).to_string() })).collect();
    let (status, _, _) =
        s.post_json("/api/v1/manifests/exists", &json!({ "items": too_many })).await;
    assert_eq!(status, StatusCode::BAD_REQUEST);
}

#[tokio::test]
async fn batch_exists_rejects_unknown_fields() {
    let s = TestServer::new("exists-batch-strict");
    let (status, _, _) =
        s.post_json("/api/v1/manifests/exists", &json!({ "items": [], "extra": 1 })).await;
    assert_eq!(status, StatusCode::BAD_REQUEST);
}

#[tokio::test]
async fn one_bad_item_does_not_fail_the_whole_batch() {
    // A 100-item sweep should not be lost to one malformed entry.
    let s = TestServer::new("exists-batch-partial");
    let (status, body, _) = s
        .post_json(
            "/api/v1/manifests/exists",
            &json!({ "items": [ { "tmdb_id": "1" }, { }, { "tmdb_id": "2" } ] }),
        )
        .await;
    assert_eq!(status, StatusCode::OK);
    let results = body["results"].as_array().unwrap();
    assert_eq!(results.len(), 3);
    assert_eq!(results[1]["exists"], false);
}

// ---------------------------------------------------------------------------
// §5 — rate limiting
// ---------------------------------------------------------------------------

#[tokio::test]
async fn exceeding_a_limit_returns_429_with_retry_after() {
    // §5: exceeding a limit returns `429` with `Retry-After`, which the JRay
    // client must honour.
    let s = TestServer::new("ratelimit");
    let token = s.token().await;

    // The bundle surface has the tightest write limit (20/hour), so it is the
    // cheapest to exhaust.
    let bundle = json!({
        "jmanifest_version": 2,
        "series": { "series_tmdb_id": "1396", "title": "Breaking Bad" },
        "episodes": []
    });

    let mut saw_429 = false;
    for _ in 0..25 {
        let (status, _, headers) =
            s.post_json_auth("/api/v1/manifests/bundle", &token, &bundle).await;
        if status == StatusCode::TOO_MANY_REQUESTS {
            assert!(headers.contains_key("retry-after"), "429 must carry Retry-After");
            saw_429 = true;
            break;
        }
    }
    assert!(saw_429, "the §5 bundle limit should engage within 25 requests");
}

#[tokio::test]
async fn read_surfaces_have_independent_budgets() {
    // §5: each surface has its own budget, so a library sweep hammering `exists`
    // cannot exhaust the budget a fetch needs.
    //
    // Only the `exists` surface returns a body on an empty database; the fetch
    // surfaces 404 (and a 404 carries no quota headers, by design). So the
    // independence is asserted by consuming `exists` and observing that its
    // counter alone moves.
    let s = TestServer::new("surfaces");

    let (_, _, h) = s.get("/api/v1/manifests/exists?tmdb_id=1").await;
    assert_eq!(h["x-ratelimit-limit"], "600");
    assert_eq!(h["x-ratelimit-remaining"], "599");

    // A fetch and a series request in between must not consume `exists` budget.
    let _ = s.get("/api/v1/manifests/movie?tmdb_id=1").await;
    let _ = s.get("/api/v1/manifests/series/1396").await;

    let (_, _, h) = s.get("/api/v1/manifests/exists?tmdb_id=1").await;
    assert_eq!(
        h["x-ratelimit-remaining"], "598",
        "fetch requests must not draw down the exists budget"
    );

    // And the batch form is a separate surface again (§5).
    let (_, _, h) =
        s.post_json("/api/v1/manifests/exists", &json!({ "items": [ { "tmdb_id": "1" } ] })).await;
    assert_eq!(h["x-ratelimit-limit"], "60");
    assert_eq!(h["x-ratelimit-remaining"], "59");
}

#[tokio::test]
async fn a_forged_forwarded_header_cannot_reset_a_budget() {
    // §8: the app must trust `X-Forwarded-For` only from the operator's proxy,
    // because §5 rate limiting keys on client IP. This server has no configured
    // proxies, so the header must be ignored entirely — otherwise a client could
    // mint a fresh budget per request.
    let s = TestServer::new("xff");

    let mut last_remaining = u32::MAX;
    for i in 0..3 {
        let req = Request::builder()
            .uri("/api/v1/manifests/exists?tmdb_id=1")
            .header("x-forwarded-for", format!("10.1.1.{i}"))
            .body(Body::empty())
            .unwrap();
        let (_, _, headers) = s.send(req).await;
        let remaining: u32 = headers["x-ratelimit-remaining"].to_str().unwrap().parse().unwrap();
        assert!(
            remaining < last_remaining,
            "budget must keep decreasing despite a changing X-Forwarded-For"
        );
        last_remaining = remaining;
    }
}

// ---------------------------------------------------------------------------
// §4 — fetch
// ---------------------------------------------------------------------------

#[tokio::test]
async fn fetch_requires_identity_parameters() {
    let s = TestServer::new("fetch-noid");
    let (status, _, _) = s.get("/api/v1/manifests/movie").await;
    assert_eq!(status, StatusCode::BAD_REQUEST);

    let (status, _, _) = s.get("/api/v1/manifests/episode?series_tmdb_id=1396").await;
    assert_eq!(status, StatusCode::BAD_REQUEST, "episode fetch needs season and episode");
}

#[tokio::test]
async fn fetching_an_absent_manifest_is_404() {
    // §4: `404` if none clears `loose`.
    let s = TestServer::new("fetch-absent");
    let (status, _, _) = s.get("/api/v1/manifests/movie?tmdb_id=999999").await;
    assert_eq!(status, StatusCode::NOT_FOUND);
}

#[tokio::test]
async fn series_bundle_for_an_unknown_series_is_404() {
    let s = TestServer::new("series-absent");
    let (status, _, _) = s.get("/api/v1/manifests/series/999999").await;
    assert_eq!(status, StatusCode::NOT_FOUND);
}

#[tokio::test]
async fn status_of_an_unknown_manifest_reports_rejected() {
    // §6 deletes rejected manifests, so a vanished id must not read as a bad
    // route — the contributor polling it needs a verdict.
    let s = TestServer::new("status-unknown");
    let (status, body, _) = s.get("/api/v1/manifests/01HZZZZZZZZZZZZZZZZZZZZZZZ/status").await;
    assert_eq!(status, StatusCode::OK);
    assert_eq!(body["status"], "rejected");
}

// ---------------------------------------------------------------------------
// §2, §4 — bundles
// ---------------------------------------------------------------------------

#[tokio::test]
async fn bundle_upload_is_not_atomic() {
    // §2: valid episodes are accepted and invalid ones rejected, with a
    // per-episode result list. All-or-nothing would let one bad episode discard an
    // entire season's compute.
    let s = TestServer::new("bundle-partial");
    let token = s.token().await;

    let good = |ep: i64| {
        json!({
            "jmanifest_version": 2,
            "identity": { "type": "episode", "series_tmdb_id": "1396", "title": "Breaking Bad",
                          "season": 1, "episode": ep },
            "cut": { "runtime_sec": 2820.0 },
            "actors": [ { "name": "Bryan Cranston", "tmdb_id": "17419",
                          "scenes": [{"start":10.0,"end":20.0}] } ]
        })
    };
    // Invalid: a scene window beyond the runtime tolerance (§6).
    let bad = json!({
        "jmanifest_version": 2,
        "identity": { "type": "episode", "series_tmdb_id": "1396", "season": 1, "episode": 3 },
        "cut": { "runtime_sec": 2820.0 },
        "actors": [ { "tmdb_id": "17419", "scenes": [{"start":10.0,"end":99999.0}] } ]
    });

    let bundle = json!({
        "jmanifest_version": 2,
        "series": { "series_tmdb_id": "1396", "title": "Breaking Bad" },
        "episodes": [ good(1), bad, good(2) ]
    });

    let (status, body, _) = s.post_json_auth("/api/v1/manifests/bundle", &token, &bundle).await;
    assert_eq!(status, StatusCode::ACCEPTED, "{body}");
    let results = body["results"].as_array().unwrap();
    assert_eq!(results.len(), 3);
    assert_eq!(results[0]["status"], "pending");
    assert_eq!(results[1]["status"], "rejected");
    assert!(results[1]["reason"].is_string(), "a rejected episode should say why");
    assert_eq!(results[2]["status"], "pending", "a later episode must still be accepted");
}

#[tokio::test]
async fn bundle_envelope_errors_are_whole_request_400s() {
    // §4: `400` for the envelope itself, whereas individual bad episodes are
    // reported in the results list.
    let s = TestServer::new("bundle-envelope");
    let token = s.token().await;

    let (status, _, _) = s
        .post_json_auth(
            "/api/v1/manifests/bundle",
            &token,
            &json!({ "jmanifest_version": 2, "series": {}, "episodes": [] }),
        )
        .await;
    assert_eq!(status, StatusCode::BAD_REQUEST, "series needs an identifier");

    let (status, _, _) = s
        .post_json_auth(
            "/api/v1/manifests/bundle",
            &token,
            &json!({ "jmanifest_version": 2,
                     "series": { "series_tmdb_id": "1396" },
                     "episodes": [], "extra": 1 }),
        )
        .await;
    assert_eq!(status, StatusCode::BAD_REQUEST, "unknown envelope field");
}

#[tokio::test]
async fn bundle_rejects_an_episode_contradicting_the_envelope() {
    // An episode must not be silently reattributed to the bundle's series.
    let s = TestServer::new("bundle-mismatch");
    let token = s.token().await;
    let bundle = json!({
        "jmanifest_version": 2,
        "series": { "series_tmdb_id": "1396" },
        "episodes": [ {
            "jmanifest_version": 2,
            "identity": { "type": "episode", "series_tmdb_id": "9999", "season": 1, "episode": 1 },
            "cut": { "runtime_sec": 2820.0 },
            "actors": [ { "tmdb_id": "17419", "scenes": [{"start":1.0,"end":2.0}] } ]
        } ]
    });
    let (status, body, _) = s.post_json_auth("/api/v1/manifests/bundle", &token, &bundle).await;
    assert_eq!(status, StatusCode::ACCEPTED);
    assert_eq!(body["results"][0]["status"], "rejected");
}

#[tokio::test]
async fn bundle_beyond_the_episode_cap_is_413() {
    // §2/§4: capped at 500 episodes; beyond that the client must page by season.
    let s = TestServer::new("bundle-cap");
    let token = s.token().await;
    let episodes: Vec<Value> = (0..501)
        .map(|i| {
            json!({
                "jmanifest_version": 2,
                "identity": { "type": "episode", "series_tmdb_id": "1396",
                              "season": 1, "episode": i },
                "cut": { "runtime_sec": 2820.0 },
                "actors": [ { "tmdb_id": "17419", "scenes": [{"start":1.0,"end":2.0}] } ]
            })
        })
        .collect();
    let bundle = json!({
        "jmanifest_version": 2,
        "series": { "series_tmdb_id": "1396" },
        "episodes": episodes
    });
    let (status, _, _) = s.post_json_auth("/api/v1/manifests/bundle", &token, &bundle).await;
    assert_eq!(status, StatusCode::PAYLOAD_TOO_LARGE);
}

#[tokio::test]
async fn bundle_route_accepts_a_body_larger_than_the_single_manifest_cap() {
    // §6 stage 1: per-route limits, so the bundle endpoint gets its larger cap
    // without widening the others. A ~3 MiB bundle exceeds the 2 MiB manifest cap
    // but is well within the 25 MiB bundle cap.
    let s = TestServer::new("bundle-bigger-cap");
    let token = s.token().await;

    let episodes: Vec<Value> = (1..=60)
        .map(|ep| {
            let scenes: Vec<Value> = (0..600).map(|j| json!([j as f64, (j + 1) as f64])).collect();
            json!({
                "jmanifest_version": 2,
                "identity": { "type": "episode", "series_tmdb_id": "1396",
                              "season": 1, "episode": ep },
                "cut": { "runtime_sec": 2820.0 },
                "actors": (0..8).map(|a| json!({
                    "tmdb_id": (20000 + a).to_string(), "scenes": scenes
                })).collect::<Vec<_>>()
            })
        })
        .collect();
    let bundle = json!({
        "jmanifest_version": 2,
        "series": { "series_tmdb_id": "1396" },
        "episodes": episodes
    });
    let encoded = bundle.to_string();
    assert!(
        encoded.len() > 2 * 1024 * 1024,
        "test body should exceed the single-manifest cap, got {} bytes",
        encoded.len()
    );

    let (status, _, _) = s.post_json_auth("/api/v1/manifests/bundle", &token, &bundle).await;
    assert_eq!(status, StatusCode::ACCEPTED, "the bundle route has its own larger cap");
}

// ---------------------------------------------------------------------------
// §4 — reports
// ---------------------------------------------------------------------------

#[tokio::test]
async fn reporting_an_unknown_manifest_is_404() {
    let s = TestServer::new("report-unknown");
    let (status, _, _) = s
        .post_json(
            "/api/v1/manifests/01HZZZZZZZZZZZZZZZZZZZZZZZ/report",
            &json!({ "reason": "misaligned" }),
        )
        .await;
    assert_eq!(status, StatusCode::NOT_FOUND);
}

#[tokio::test]
async fn a_report_is_accepted_and_does_not_delist() {
    // §5a: delisting stays an operator action. Automatic delisting on report would
    // hand any client a remote delete primitive.
    let s = TestServer::new("report-ok");
    let token = s.token().await;
    let (_, body, _) =
        s.post_json_auth("/api/v1/manifests", &token, &movie_manifest("504172", 6420.5)).await;
    let id = body["manifest_id"].as_str().unwrap().to_string();

    let (status, body, _) = s
        .post_json(
            &format!("/api/v1/manifests/{id}/report"),
            &json!({ "reason": "wrong_actors", "note": "these are not the right people" }),
        )
        .await;
    assert_eq!(status, StatusCode::OK, "{body}");
    assert!(body["report_id"].is_string());

    let (status, body, _) = s.get(&format!("/api/v1/manifests/{id}/status")).await;
    assert_eq!(status, StatusCode::OK);
    assert_eq!(body["status"], "pending", "a report must not change status by itself");
}

#[tokio::test]
async fn report_rejects_an_unknown_reason_and_unknown_fields() {
    let s = TestServer::new("report-strict");
    let (status, _, _) = s
        .post_json("/api/v1/manifests/x/report", &json!({ "reason": "i_just_dont_like_it" }))
        .await;
    assert_eq!(status, StatusCode::BAD_REQUEST);

    let (status, _, _) = s
        .post_json("/api/v1/manifests/x/report", &json!({ "reason": "spam", "extra": true }))
        .await;
    assert_eq!(status, StatusCode::BAD_REQUEST);
}

#[tokio::test]
async fn report_note_is_length_capped() {
    // §5a: free text from an anonymous caller is capped hard.
    let s = TestServer::new("report-note");
    let token = s.token().await;
    let (_, body, _) =
        s.post_json_auth("/api/v1/manifests", &token, &movie_manifest("504172", 6420.5)).await;
    let id = body["manifest_id"].as_str().unwrap().to_string();

    let (status, _, _) = s
        .post_json(
            &format!("/api/v1/manifests/{id}/report"),
            &json!({ "reason": "spam", "note": "a".repeat(5000) }),
        )
        .await;
    assert_eq!(status, StatusCode::BAD_REQUEST);
}

// ---------------------------------------------------------------------------
// Malformed input
// ---------------------------------------------------------------------------

#[tokio::test]
async fn malformed_json_is_a_400_not_a_500() {
    let s = TestServer::new("bad-json");
    let token = s.token().await;
    let req = Request::builder()
        .method("POST")
        .uri("/api/v1/manifests")
        .header("content-type", "application/json")
        .header("authorization", format!("Bearer {token}"))
        .body(Body::from("{ this is not json"))
        .unwrap();
    let (status, _, _) = s.send(req).await;
    assert_eq!(status, StatusCode::BAD_REQUEST);
}

#[tokio::test]
async fn deeply_nested_json_does_not_crash_the_parser() {
    // §6 stage 1 caps nesting depth; a parser handed unbounded input is a DoS
    // primitive, so the failure must be a clean rejection.
    let s = TestServer::new("deep-json");
    let token = s.token().await;
    let deep = format!("{}{}", "[".repeat(5000), "]".repeat(5000));
    let req = Request::builder()
        .method("POST")
        .uri("/api/v1/manifests")
        .header("content-type", "application/json")
        .header("authorization", format!("Bearer {token}"))
        .body(Body::from(deep))
        .unwrap();
    let (status, _, _) = s.send(req).await;
    assert!(
        status == StatusCode::BAD_REQUEST || status == StatusCode::PAYLOAD_TOO_LARGE,
        "deeply nested input should be rejected cleanly, got {status}"
    );
}

#[tokio::test]
async fn unknown_routes_are_404() {
    let s = TestServer::new("routes");
    let (status, _, _) = s.get("/api/v1/nonexistent").await;
    assert_eq!(status, StatusCode::NOT_FOUND);
    let (status, _, _) = s.get("/api/v2/manifests/exists?tmdb_id=1").await;
    assert_eq!(status, StatusCode::NOT_FOUND);
}