# -*- coding: utf-8 -*-
"""
Serving tests: model bundle loading, box back-projection, label mapping,
weight priors, and the live API surface (via FastAPI TestClient).

Run:  pytest tests/ -v
Requires the deploy/latest bundle (model.onnx + names.json) in the repo.
"""
from __future__ import annotations

import io
import sys
from pathlib import Path

import numpy as np
import pytest
from PIL import Image

REPO = Path(__file__).resolve().parents[1]
sys.path.insert(0, str(REPO))

from ml.serving.labels import to_bucket, BUCKETS  # noqa: E402
from ml.serving.weights import DEFAULT_PRIORS_G, estimate_weight_g, load_priors  # noqa: E402


# ---------------------------------------------------------------------------
# Pure logic
# ---------------------------------------------------------------------------

def test_bucket_identity_for_current_classes():
    for b in BUCKETS:
        assert to_bucket(b) == b


def test_bucket_mapping_taco_style():
    assert to_bucket("Plastic bottle") == "plastic"
    assert to_bucket("Drink can") == "metal"
    assert to_bucket("Glass jar") == "glass"
    assert to_bucket("Battery") == "ewaste"
    assert to_bucket("Cardboard") == "paper"
    assert to_bucket("mystery item") == "other"
    assert to_bucket("") == "other"


def test_weight_priors_cover_all_buckets():
    priors = load_priors()
    for b in BUCKETS:
        assert estimate_weight_g(b, priors) > 0
    assert priors == DEFAULT_PRIORS_G


# ---------------------------------------------------------------------------
# Model bundle
# ---------------------------------------------------------------------------

BUNDLE_DIR = REPO / "deploy" / "latest"


@pytest.fixture(scope="session")
def bundle():
    from ml.serving.model_loader import ModelBundle
    return ModelBundle(BUNDLE_DIR)


def test_bundle_loads_names(bundle):
    assert bundle.names == ["plastic", "paper", "glass", "metal", "organic", "ewaste", "other"]
    assert bundle.imgsz == 640


def test_backprojection_boxes_span_original_image(bundle, tmp_path):
    # Non-square image: with the old bug, boxes stayed in 640-space and could
    # never reach x > 640 on a 1920-wide original.
    w0, h0 = 1920, 1080
    rng = np.random.default_rng(42)
    arr = (rng.random((h0, w0, 3)) * 255).astype(np.uint8)
    img_path = tmp_path / "noise.jpg"
    Image.fromarray(arr).save(img_path)

    tensor, meta = bundle.load_image(img_path)
    assert tensor.shape == (1, 3, 640, 640)
    assert meta[0] == w0 and meta[1] == h0

    # Synthetic imgsz-space boxes at the letterbox edges must map to original corners.
    r = meta[2]
    pad_w, pad_h = meta[3], meta[4]
    boxes_imgsz = np.array([
        [pad_w, pad_h, 640 - pad_w, 640 - pad_h],   # full frame
        [320.0, 320.0, 480.0, 400.0],               # center-right box
    ], dtype=np.float32)
    out = bundle._backproject_boxes(boxes_imgsz.copy(), meta)

    # Full-frame box must span (0,0)-(w0,h0), not stay in 640-space
    assert out[0][2] == pytest.approx(w0, abs=2.0)
    assert out[0][3] == pytest.approx(h0, abs=2.0)
    # Center box must be scaled by 1/r beyond the 640 grid
    assert out[1][2] == pytest.approx((480.0 - pad_w) / r, abs=2.0)
    assert out[1][2] > 640  # the old bug capped this at 640


def test_end_to_end_predict_returns_valid_boxes(bundle, tmp_path):
    w0, h0 = 1280, 960
    img = Image.new("RGB", (w0, h0), (140, 150, 160))
    p = tmp_path / "plain.jpg"
    img.save(p)
    result = bundle.predict(p, return_masks=False)
    assert result["orig_shape"] == [h0, w0]
    for b in result["boxes"]:
        x1, y1, x2, y2 = b["xyxy"]
        assert 0 <= x1 <= x2 <= w0 + 1
        assert 0 <= y1 <= y2 <= h0 + 1
        assert 0.0 <= b["conf"] <= 1.0


# ---------------------------------------------------------------------------
# API surface
# ---------------------------------------------------------------------------

@pytest.fixture(scope="session")
def client(tmp_path_factory):
    import os
    os.environ["ALAMI_AI_BUNDLE"] = str(BUNDLE_DIR)
    os.environ["ALAMI_FEEDBACK_DIR"] = str(tmp_path_factory.mktemp("fb"))
    from fastapi.testclient import TestClient
    from ml.serving.server import app
    return TestClient(app)


def _jpeg_bytes(w=800, h=600) -> bytes:
    buf = io.BytesIO()
    Image.new("RGB", (w, h), (120, 130, 140)).save(buf, format="JPEG")
    return buf.getvalue()


def test_healthz(client):
    r = client.get("/healthz")
    assert r.status_code == 200
    body = r.json()
    assert body["ok"] is True
    assert body["names"][0] == "plastic"


class _FakeQuery:
    """Chainable fake for the supabase query builder used by the dashboard."""
    def __init__(self, counts, raise_on_or=False):
        self._counts = counts          # dict: key -> count
        self._raise_on_or = raise_on_or
        self._corrected = False
        self._or = False
    def select(self, *a, **k): return self
    def limit(self, *a, **k): return self
    @property
    def not_(self): return self
    def is_(self, col, val):
        self._corrected = True
        return self
    def or_(self, expr):
        if self._raise_on_or:
            raise Exception("column trash_predictions.source does not exist")
        self._or = True
        return self
    def execute(self):
        class R: pass
        r = R()
        if self._corrected and self._or: r.count = self._counts["corrected_litter"]
        elif self._corrected: r.count = self._counts["corrected_all"]
        elif self._or: r.count = self._counts["litter"]
        else: r.count = self._counts["total"]
        return r


class _FakeSB:
    def __init__(self, counts, raise_on_or=False):
        self._counts, self._raise = counts, raise_on_or
    def table(self, name):
        return _FakeQuery(dict(self._counts), self._raise)


def test_dashboard_corpus_splits_pools():
    from ml.serving import dashboard as d
    counts = {"total": 100, "litter": 80, "corrected_litter": 20, "corrected_all": 25}
    data = d.gather_metrics(REPO / "deploy" / "latest", REPO,
                            lambda: _FakeSB(counts), "trash_predictions")
    c = data["corpus"]
    assert c["litter_predictions"] == 80
    assert c["product_scan_pool"] == 20        # 100 - 80
    assert c["corrected"] == 20                 # litter-only corrections
    assert c["labeled_pct"] == 25.0             # 20/80


def test_dashboard_corpus_fallback_without_source_column():
    from ml.serving import dashboard as d
    counts = {"total": 50, "litter": 0, "corrected_litter": 0, "corrected_all": 5}
    data = d.gather_metrics(REPO / "deploy" / "latest", REPO,
                            lambda: _FakeSB(counts, raise_on_or=True), "trash_predictions")
    c = data["corpus"]
    assert c["litter_predictions"] == 50        # everything counts as litter
    assert c["product_scan_pool"] == 0
    assert c["corrected"] == 5                  # fallback corrected count
    # and the page must still render
    html = d.render_html(data, "vtest")
    assert "Brand-Radar-Pool" in html


def test_dashboard_renders(client):
    r = client.get("/dashboard")
    assert r.status_code == 200
    assert "text/html" in r.headers["content-type"]
    html = r.text
    # current model metrics from model_card.json are present
    assert "Alami Vision" in html and "ML Dashboard" in html
    assert "mAP@50" in html
    # per-class F1 table lists the material classes
    assert "plastic" in html and "organic" in html
    # corpus monitor section exists (Supabase not configured in test -> n/a, must not error)
    assert "Trainings-Korpus" in html


def test_analyze_upload_contract(client):
    r = client.post(
        "/v1/analyze/upload",
        files={"file": ("test.jpg", _jpeg_bytes(), "image/jpeg")},
        data={"user_id": "test-user", "domain": "trash"},
    )
    assert r.status_code == 200
    body = r.json()
    assert body["model_version"]
    assert body["domain"] == "trash"
    assert body["image"] == {"width": 800, "height": 600}
    assert isinstance(body["objects"], list)
    s = body["summary"]
    assert s["item_count"] == len(body["objects"])
    assert s["trash_detected"] == (s["item_count"] > 0)
    for obj in body["objects"]:
        assert obj["label"] in BUCKETS
        assert obj["raw_label"]
        assert obj["weight_source"] == "material_prior_v0"
        assert 0.0 <= obj["area_fraction"] <= 1.0
        # AR-overlay fields: normalized bbox in 0..1, German label, hex colour
        assert len(obj["bbox_norm"]) == 4
        assert all(0.0 <= v <= 1.0 for v in obj["bbox_norm"])
        assert obj["label_de"] and obj["label_en"] and obj["color"].startswith("#")


def test_materials_catalog(client):
    r = client.get("/v1/materials")
    assert r.status_code == 200
    mats = r.json()["materials"]
    assert [m["bucket"] for m in mats] == list(BUCKETS)
    for m in mats:
        assert m["label_de"] and m["label_en"]
        assert m["color"].startswith("#") and len(m["color"]) == 7
    by_bucket = {m["bucket"]: m for m in mats}
    assert by_bucket["glass"]["label_en"] == "Glass"
    assert by_bucket["glass"]["label_de"] == "Glas"


def test_analyze_upload_source_tag_reaches_logging(client, monkeypatch):
    import ml.serving.server as srv
    captured = {}
    def fake_log(prediction_id, image_ref, user_id, mv, preds, endpoint, source=None):
        captured["source"] = source
    monkeypatch.setattr(srv, "log_prediction", fake_log)
    r = client.post("/v1/analyze/upload",
                    files={"file": ("t.jpg", _jpeg_bytes(), "image/jpeg")},
                    data={"log": "true", "source": "product-scan"})
    assert r.status_code == 200
    assert captured["source"] == "product-scan"


def test_materials_catalog_has_disposal_hints(client):
    r = client.get("/v1/materials")
    mats = {m["bucket"]: m for m in r.json()["materials"]}
    for b in BUCKETS:
        assert mats[b]["disposal_hint_en"] and mats[b]["disposal_hint_de"]
    assert "Pfand" in mats["plastic"]["disposal_hint_de"]
    assert "deposit" in mats["plastic"]["disposal_hint_en"]


def test_analyze_upload_preview_mode_not_logged(client, monkeypatch):
    # log=false (preview) must NOT call log_prediction; log=true (default) must.
    import ml.serving.server as srv
    calls = {"n": 0}
    monkeypatch.setattr(srv, "log_prediction", lambda *a, **k: calls.__setitem__("n", calls["n"] + 1))

    r = client.post("/v1/analyze/upload",
                    files={"file": ("t.jpg", _jpeg_bytes(), "image/jpeg")},
                    data={"log": "false"})
    assert r.status_code == 200 and calls["n"] == 0  # preview: not logged

    r = client.post("/v1/analyze/upload",
                    files={"file": ("t.jpg", _jpeg_bytes(), "image/jpeg")},
                    data={"log": "true"})
    assert r.status_code == 200 and calls["n"] == 1  # snapped: logged


def test_analyze_rejects_unknown_domain(client):
    r = client.post(
        "/v1/analyze/upload",
        files={"file": ("t.jpg", _jpeg_bytes(), "image/jpeg")},
        data={"domain": "faces"},
    )
    assert r.status_code == 400


def test_feedback_roundtrip(client):
    r = client.post("/feedback", json={
        "prediction_id": "00000000-0000-0000-0000-000000000001",
        "corrected_type": "plastic",
        "corrected_weight_kg": 0.5,
        "source": "pytest",
        "corrected_items": [{"index": 0, "corrected_label": "metal", "corrected_weight_g": 15.0}],
    })
    assert r.status_code == 200
    assert r.json()["ok"] is True


def test_feedback_persists_notes_to_supabase(client, monkeypatch):
    """notes must reach the Supabase update — the local JSONL is ephemeral."""
    import ml.serving.server as srv

    captured = {}

    class _Q:
        def update(self, payload):
            captured.update(payload)
            return self

        def eq(self, *a):
            return self

        def execute(self):
            return None

    class _SB:
        def table(self, name):
            return _Q()

    monkeypatch.setattr(srv, "get_supabase", lambda: _SB())
    r = client.post("/feedback", json={
        "prediction_id": "00000000-0000-0000-0000-000000000002",
        "corrected_type": "glass",
        "source": "pytest",
        "notes": "was 2 bottles, model saw 1",
    })
    assert r.status_code == 200 and r.json()["ok"] is True
    assert captured["notes"] == "was 2 bottles, model saw 1"
    assert captured["feedback_source"] == "pytest"
    assert captured["corrected_type"] == "glass"


def test_feedback_noop_without_changes(client):
    r = client.post("/feedback", json={"prediction_id": "x"})
    assert r.status_code == 200
    assert "ignored" in r.json()["message"]


def _capture_sb(monkeypatch):
    """Mock Supabase that records the update() payload it receives."""
    import ml.serving.server as srv
    captured = {}

    class _Q:
        def update(self, payload):
            captured.update(payload); return self
        def eq(self, *a):
            return self
        def execute(self):
            return None

    class _SB:
        def table(self, name):
            return _Q()

    monkeypatch.setattr(srv, "get_supabase", lambda: _SB())
    return captured


def test_feedback_v2_signals_persist(client, monkeypatch):
    """v2 (#141): added_items (missed objects), reasons (failure chips) and
    corrected_items[].action must survive to the Supabase payload — the mobile
    client sends them live and they used to be silently dropped."""
    captured = _capture_sb(monkeypatch)
    r = client.post("/feedback", json={
        "prediction_id": "00000000-0000-0000-0000-00000000000a",
        "source": "pytest",
        "corrected_items": [{"index": 0, "action": "reject"}],
        "added_items": [
            {"label": "plastic", "point": {"x": 0.4, "y": 0.6}},
            {"label": "glass", "box": {"x": 0.1, "y": 0.1, "w": 0.2, "h": 0.3}, "count": 2},
        ],
        "reasons": ["too_dark", "occluded"],
    })
    assert r.status_code == 200 and r.json()["ok"] is True
    # action rides along inside the corrected_items JSONB (no own column)
    assert captured["corrected_items"][0]["action"] == "reject"
    assert captured["added_items"][0]["label"] == "plastic"
    assert captured["added_items"][0]["point"] == {"x": 0.4, "y": 0.6}
    assert captured["added_items"][1]["count"] == 2
    assert captured["feedback_reasons"] == ["too_dark", "occluded"]


def test_feedback_added_items_alone_is_not_noop(client, monkeypatch):
    """A submission where the AI missed everything carries only added_items — it
    is a real recall signal, not a no-op."""
    captured = _capture_sb(monkeypatch)
    r = client.post("/feedback", json={
        "prediction_id": "00000000-0000-0000-0000-00000000000b",
        "added_items": [{"label": "metal", "count": 1}],
    })
    assert r.status_code == 200 and r.json()["ok"] is True
    assert "ignored" not in (r.json().get("message") or "")
    assert captured["added_items"][0]["label"] == "metal"


def test_feedback_fallback_drops_only_missing_column(client, monkeypatch):
    """If a v2 column isn't migrated yet, only that column is dropped — the
    already-migrated ones (corrected_items) must still be written."""
    import ml.serving.server as srv
    seen = {"attempts": []}

    class _Q:
        def __init__(self):
            self._payload = None
        def update(self, payload):
            self._payload = dict(payload); return self
        def eq(self, *a):
            return self
        def execute(self):
            seen["attempts"].append(self._payload)
            if "added_items" in self._payload:
                raise RuntimeError("PGRST204: Could not find the 'added_items' column in the schema cache")
            return None

    class _SB:
        def table(self, name):
            return _Q()

    monkeypatch.setattr(srv, "get_supabase", lambda: _SB())
    r = client.post("/feedback", json={
        "prediction_id": "00000000-0000-0000-0000-00000000000c",
        "corrected_type": "paper",
        "corrected_items": [{"index": 1, "corrected_label": "paper"}],
        "added_items": [{"label": "organic"}],
    })
    assert r.status_code == 200 and r.json()["ok"] is True
    final = seen["attempts"][-1]
    assert "added_items" not in final                 # missing column dropped
    assert final["corrected_items"][0]["corrected_label"] == "paper"  # kept
    assert final["corrected_type"] == "paper"         # base field kept


def test_feedback_weight_bounds(client):
    r = client.post("/feedback", json={"prediction_id": "x", "corrected_weight_kg": 99.0})
    assert r.status_code == 422 or r.status_code == 400


def test_predict_legacy_contract_has_raw_label(client, tmp_path, monkeypatch):
    # Serve bytes without network: monkeypatch the fetcher
    import ml.serving.server as srv
    monkeypatch.setattr(srv, "fetch_image_bytes", lambda url: _jpeg_bytes())
    r = client.post("/predict", json={"image_url": "https://example.test/img.jpg", "user_id": "u1"})
    assert r.status_code == 200
    body = r.json()
    assert set(body.keys()) == {"model_version", "inference_ms", "predictions", "prediction_id"}
    for p in body["predictions"]:
        assert set(p.keys()) == {"xyxy", "cls", "conf", "label", "raw_label"}