import hashlib
import json
from io import BytesIO
from pathlib import Path

import pytest
from fastapi.testclient import TestClient
from PIL import Image

from pigway_frame_flow.api.app import create_app
from pigway_frame_flow.settings import Settings
from pigway_frame_flow.storage.database import encode, now_iso


def test_health_ready(client):
    assert client.get("/health").status_code == 200
    assert client.get("/ready").status_code == 200
    assert all(client.get("/ready").json()["checks"].values())


def test_without_external_project(client):
    assert client.get("/").status_code == 200
    assert client.get("/api/v1/devices").status_code == 200
    assert len(client.get("/api/v1/templates").json()) == 6
    assert client.get("/api/v1/jobs").status_code == 200


def test_auth(client):
    assert (
        client.get("/api/v1/devices", headers={"Authorization": ""}).status_code == 401
    )
    r = client.get("/api/v1/settings", headers={"Authorization": "Bearer wrong"})
    assert r.status_code == 401
    assert set(r.json()["error"]) == {"code", "message", "request_id", "details"}


def test_scope(client, service):
    service.db.execute(
        "INSERT INTO clients VALUES(?,?,?,?,?,?,?)",
        (
            "reader",
            hashlib.sha256(b"reader").hexdigest(),
            "Reader",
            encode(["devices:read"]),
            now_iso(),
            None,
            1,
        ),
    )
    assert (
        client.get(
            "/api/v1/devices", headers={"Authorization": "Bearer reader"}
        ).status_code
        == 200
    )
    assert (
        client.post(
            "/api/v1/display",
            headers={"Authorization": "Bearer reader"},
            json={"content": {"type": "template", "template": "quote"}},
        ).status_code
        == 403
    )


def test_device_schema(client):
    device = client.get("/api/v1/devices/living-room").json()
    assert device["id"] == "living-room"
    assert device["display"]["width"] == 1200
    assert device["capabilities"]["color"] is True
    assert device["slideshow"]["mode"] == "queue"
    assert device["slideshow"]["members_available"] is False
    assert "nickname" not in device
    assert "api_key" not in json.dumps(device)


def test_all_cloud_capabilities(client, service):
    response = client.post(
        "/api/v1/display", json={"content": {"type": "template", "template": "quote"}}
    )
    assert response.status_code == 202
    id = response.json()["operation_id"]
    service.process_one()
    service.sync()
    assert client.get("/api/v1/operations/" + id).json()["status"] == "COMPLETED"
    images = client.get("/api/v1/devices/living-room/images").json()
    assert len(images) == 2
    assert client.get(images[0]["url"] + "?thumbnail=true").status_code == 200
    name = images[1]["name"]
    named = client.post(
        "/api/v1/display", json={"content": {"type": "image", "image_name": name}}
    )
    assert named.status_code == 202
    service.process_one()
    service.sync()
    assert service.registry.get("living-room").get_current_image() == 1


def test_delete_current_confirmation(client):
    assert client.delete("/api/v1/devices/living-room/images/1").status_code == 409


def test_preview_local_upload(client, service):
    out = BytesIO()
    Image.new("RGB", (100, 200), "blue").save(out, "PNG")
    preview = client.post(
        "/api/v1/preview",
        files={"file": ("sample.png", out.getvalue(), "image/png")},
        data={"fit": "contain", "profile": "grayscale"},
    )
    assert preview.status_code == 200
    asset = preview.json()
    assert client.get(asset["url"]).status_code == 200
    r = client.post(
        "/api/v1/devices/living-room/upload",
        json={"type": "image", "asset_id": asset["asset_id"]},
    )
    assert r.status_code == 202
    service.process_one()
    assert service.registry.get("living-room").get_current_image() == 1
    assert service.registry.get("living-room").client.uploads == 0


@pytest.mark.parametrize(
    "content",
    [{"type": "html", "data": "hello"}, {"type": "markdown", "data": "hello"}],
)
def test_unsupported(client, content):
    r = client.post("/api/v1/display", json={"content": content})
    assert r.status_code == 422
    assert r.json()["error"]["code"] == "UNSUPPORTED_CAPABILITY"


def test_idempotency_api(client, service):
    p = {"content": {"type": "template", "template": "quote"}}
    a = client.post("/api/v1/display", json=p, headers={"Idempotency-Key": "repeat"})
    b = client.post("/api/v1/display", json=p, headers={"Idempotency-Key": "repeat"})
    assert a.json() == b.json()
    service.process_one()
    assert service.registry.get("living-room").client.uploads == 1


def test_request_id(client):
    r = client.get(
        "/api/v1/devices/no-device", headers={"X-Request-ID": "external-123"}
    )
    assert r.status_code == 404
    assert r.headers["X-Request-ID"] == "external-123"
    assert r.json()["error"]["request_id"] == "external-123"


def test_secret_never_returned(client, service):
    assert "test-frame-token" not in client.get("/api/v1/settings").text
    data = client.post(
        "/api/v1/display",
        json={
            "content": {
                "type": "template",
                "template": "quote",
                "data": {"title": "test-frame-token"},
            }
        },
    )
    row = service.db.one(
        "SELECT payload FROM operations WHERE id=?", (data.json()["operation_id"],)
    )
    assert "test-frame-token" not in row["payload"]
    assert "test-frame-token" not in str(service.settings)


def test_cors_default(client):
    response = client.options(
        "/api/v1/display",
        headers={
            "Origin": "https://external.example",
            "Access-Control-Request-Method": "POST",
        },
    )
    assert "access-control-allow-origin" not in response.headers


def test_missing_token_not_ready(tmp_path):
    app = create_app(
        Settings(
            data_dir=tmp_path / "data", config_dir=tmp_path / "config", api_token=""
        ),
        False,
    )
    with TestClient(app) as c:
        assert c.get("/ready").status_code == 503
        assert (
            c.post(
                "/api/v1/display",
                json={"content": {"type": "template", "template": "quote"}},
            ).status_code
            == 401
        )


def test_live_read_only(tmp_path):
    app = create_app(
        Settings(
            data_dir=tmp_path / "data",
            config_dir=tmp_path / "config",
            api_token="test",
            api_key="fake-device-key",
            mock=False,
            write_enabled=False,
        ),
        False,
    )
    with TestClient(app) as c:
        c.headers["Authorization"] = "Bearer test"
        assert c.get("/ready").status_code == 200
        assert (
            c.post(
                "/api/v1/display",
                json={"content": {"type": "template", "template": "quote"}},
            ).status_code
            == 403
        )
        assert c.delete("/api/v1/devices/living-room/images/1").status_code == 403
        assert c.post("/api/v1/devices/living-room/restore").status_code == 403


def test_multidevice(tmp_path):
    config = tmp_path / "config"
    config.mkdir()
    (config / "devices.yml").write_text(
        "devices:\n  living-room:\n    driver: kokonna\n  office:\n    driver: kokonna\n"
    )
    app = create_app(
        Settings(data_dir=tmp_path / "data", config_dir=config, api_token="test"), False
    )
    with TestClient(app) as c:
        c.headers["Authorization"] = "Bearer test"
        assert len(c.get("/api/v1/devices").json()) == 2
        assert (
            c.post(
                "/api/v1/devices/office/display",
                json={"content": {"type": "image", "image_id": 1}},
            ).status_code
            == 202
        )
        app.state.service.process_one()
        assert app.state.service.registry.get("living-room").client.displays == []
        assert app.state.service.registry.get("office").client.displays == [1]


def test_job_crud(client):
    p = {
        "name": "Morning",
        "schedule": {"type": "daily", "time": "07:00"},
        "source": {"type": "template", "template": "daily-dashboard"},
    }
    result = client.post("/api/v1/jobs", json=p)
    assert result.status_code == 201
    id = result.json()["id"]
    p["enabled"] = False
    assert client.put("/api/v1/jobs/" + id, json=p).json()["enabled"] is False
    assert client.delete("/api/v1/jobs/" + id).status_code == 204


def test_contract(client, app):
    schema = client.get("/openapi.json").json()
    expected = json.loads((Path(__file__).parent / "contract.json").read_text())
    actual = {
        path: {method: sorted(spec["responses"]) for method, spec in methods.items()}
        for path, methods in schema["paths"].items()
    }
    assert actual == expected
    assert schema["components"]["securitySchemes"]["HTTPBearer"]["scheme"] == "bearer"
    assert "Device" in schema["components"]["schemas"]
    assert schema["components"]["schemas"]["OperationStatus"]["enum"] == [
        "QUEUED",
        "RENDERING",
        "UPLOADING",
        "SYNCING",
        "COMPLETED",
        "FAILED",
        "UNKNOWN",
    ]
    assert client.get("/docs").status_code == 200


def test_core_has_no_client_special_case():
    for path in Path("pigway_frame_flow").rglob("*.py"):
        assert "ticktar" not in path.read_text().lower()
    assert (
        "KokonnaClient" not in Path("pigway_frame_flow/display/service.py").read_text()
    )


def test_ui_languages(client):
    assert client.get("/ui/app.js").status_code == 200
    i18n = client.get("/ui/i18n.js").text
    assert "zh:" in i18n and "en:" in i18n
    assert "data-theme=dark" in client.get("/ui/style.css").text


def test_local_asset_deletion(client, service):
    asset = service.assets.put(service.renderer.render("quote", {}), "quote.jpg")
    assert client.delete("/api/v1/assets/" + asset["asset_id"]).status_code == 204
    assert client.get(asset["url"]).status_code == 404


def test_asset_reference_prevents_delete(client, service):
    asset = service.assets.put(service.renderer.render("quote", {}), "photo.jpg")
    service.submit(
        "display",
        {"content": {"type": "image", "asset_id": asset["asset_id"]}},
        "living-room",
        "admin",
        "reference",
    )
    assert client.delete("/api/v1/assets/" + asset["asset_id"]).status_code == 409


def test_unknown_same_idempotency_key_returns_original(client, service):
    from pigway_frame_flow.errors import ErrorCode, FlowError

    payload = {"content": {"type": "template", "template": "quote"}}

    def fail(*args):
        raise FlowError(ErrorCode.WRITE_RESULT_UNKNOWN, "Write outcome unknown", 502)

    service.registry.get("living-room").upload = fail
    original = client.post(
        "/api/v1/display", json=payload, headers={"Idempotency-Key": "timeout-test"}
    )
    service.process_one()
    assert service.operation(original.json()["operation_id"])["status"] == "UNKNOWN"
    retry = client.post(
        "/api/v1/display", json=payload, headers={"Idempotency-Key": "timeout-test"}
    )
    assert retry.status_code == 202
    assert retry.json() == original.json()
    fresh = client.post(
        "/api/v1/display", json=payload, headers={"Idempotency-Key": "new-key"}
    )
    assert fresh.status_code == 409


def test_schema_contract(client):
    schemas = client.get("/openapi.json").json()["components"]["schemas"]
    expected = json.loads((Path(__file__).parent / "schema-contract.json").read_text())
    assert {key: schemas[key] for key in expected} == expected


def test_preview_is_draft_until_saved(client, service):
    out = BytesIO()
    Image.new("RGB", (50, 50), "red").save(out, "PNG")
    preview = client.post(
        "/api/v1/preview", files={"file": ("draft.png", out.getvalue(), "image/png")}
    ).json()
    assert preview["name"] == "draft.jpg"
    assert not any(
        x["asset_id"] == preview["asset_id"]
        for x in client.get("/api/v1/assets").json()
    )
    saved = client.post(
        "/api/v1/devices/living-room/upload",
        json={"type": "image", "asset_id": preview["asset_id"]},
    )
    assert saved.status_code == 202
    service.process_one()
    assert any(
        x["asset_id"] == preview["asset_id"]
        for x in client.get("/api/v1/assets").json()
    )
    assert service.registry.get("living-room").client.uploads == 0


def test_restore_availability(client, service):
    assert client.get("/api/v1/devices/living-room").json()["can_restore"] is False
    client.post(
        "/api/v1/display", json={"content": {"type": "template", "template": "quote"}}
    )
    service.process_one()
    assert client.get("/api/v1/devices/living-room").json()["can_restore"] is True


def test_template_configuration_reload(client, service):
    assert (
        client.put(
            "/api/v1/templates/quote/config", json={"data": {"quote": "Saved words"}}
        ).status_code
        == 200
    )
    assert (
        client.get("/api/v1/templates/quote").json()["defaults"]["quote"]
        == "Saved words"
    )


def test_docs_offline_resources(client):
    html = client.get("/docs").text
    assert "/ui/swagger-ui-bundle.js" in html
    assert "cdn.jsdelivr" not in html
    assert client.get("/ui/swagger-ui-bundle.js").status_code == 200
    assert client.get("/ui/swagger-ui.css").status_code == 200