from io import BytesIO

import pytest
from PIL import Image

from pigway_frame_flow.models import DisplayGeometry
from pigway_frame_flow.providers.photo_names import folder_caption
from pigway_frame_flow.providers.photo_sources import PhotoSourceInput
from pigway_frame_flow.renderers.frame_geometry import frame_canvas
from pigway_frame_flow.renderers.photo_caption import render_captioned_photo


@pytest.mark.parametrize("rotation", [0, 90, 180, 270])
@pytest.mark.parametrize("mode", [None, "auto", "portrait", "landscape"])
def test_canvas_respects_rotation_and_explicit_direction(rotation, mode):
    display = DisplayGeometry(
        width=1200, height=1600, rotation=rotation, color_mode="color"
    )
    expected = (
        (1600, 1200)
        if mode == "landscape" or (mode in (None, "auto") and rotation in (90, 270))
        else (1200, 1600)
    )
    assert frame_canvas(display, mode) == expected


@pytest.mark.parametrize("profile", ["color", "grayscale"])
def test_landscape_caption_uses_compact_watermark(service, profile):
    out = BytesIO()
    Image.new("RGB", (1600, 900), "blue").save(out, "JPEG")
    data = render_captioned_photo(
        out.getvalue(),
        folder_caption("20261005 家庭出游@示例地点"),
        service.renderer.font,
        profile=profile,
        size=(1600, 1200),
    )
    with Image.open(BytesIO(data)) as image:
        assert image.size == (1600, 1200)
        assert image.crop((30, 1128, 1570, 1200)).convert("L").getextrema()[0] < 50
        assert image.getpixel((20, 1100))[0] < 230
        assert image.getpixel((20, 1190))[0] > 240
        pixel = image.getpixel((800, 480))
        assert (
            len(set(pixel)) <= 2
            if profile == "grayscale"
            else pixel[2] > pixel[0] + 100
        )


@pytest.mark.parametrize(
    "mode,expected",
    [("auto", (1600, 1200)), ("landscape", (1600, 1200)), ("portrait", (1200, 1600))],
)
def test_select_and_render_use_same_direction(
    client, service, settings, mode, expected
):
    root = settings.data_dir.parent / "photos"
    settings.photo_root = root
    folder = root / "20261005 出游@金山"
    folder.mkdir(parents=True)
    for name, size in [("wide.jpg", (300, 200)), ("tall.jpg", (200, 300))]:
        Image.new("RGB", size, "blue").save(folder / name)
    service.photo_sources.save(
        "family",
        PhotoSourceInput(
            name="Family",
            kind="local",
            location=".",
            folder_caption=True,
            orientation=mode,
        ),
    )
    rows = client.get("/api/v1/photo-sources/family/images").json()["items"]
    assert len(rows) == 1 and rows[0]["name"] == (
        "wide.jpg" if expected[0] > expected[1] else "tall.jpg"
    )
    before = service.registry.get("living-room").get_current_image()
    accepted = client.post(
        "/api/v1/devices/living-room/upload",
        json={"type": "photo_source", "source_id": "family"},
    )
    assert accepted.status_code == 202 and service.process_one()
    op = client.get("/api/v1/operations/" + accepted.json()["operation_id"]).json()
    assert op["status"] == "COMPLETED"
    with Image.open(BytesIO(client.get(op["result"]["url"]).content)) as image:
        assert image.size == expected
    assert service.registry.get("living-room").get_current_image() == before


def test_auto_catalog_cache_is_not_shared_between_opposite_canvases(service, settings):
    root = settings.data_dir.parent / "photos"
    settings.photo_root = root
    root.mkdir()
    for name, size in [("wide.jpg", (300, 200)), ("tall.jpg", (200, 300))]:
        Image.new("RGB", size).save(root / name)
    p = service.photo_sources
    p.save(
        "family",
        PhotoSourceInput(name="Family", kind="local", location=".", orientation="auto"),
    )
    assert p.catalog("family", target_size=(1600, 1200))[0]["name"] == "wide.jpg"
    assert p.catalog("family", target_size=(1200, 1600))[0]["name"] == "tall.jpg"


def test_auto_preview_uses_requested_device_not_default(
    client, service, settings, monkeypatch
):
    import copy

    driver = service.registry.get("living-room")
    other = copy.copy(driver)
    model = driver.device().model_copy(
        update={
            "id": "bedroom",
            "display": driver.device().display.model_copy(update={"rotation": 0}),
        }
    )
    monkeypatch.setattr(other, "device", lambda: model)
    monkeypatch.setitem(service.registry.drivers, "bedroom", other)
    root = settings.data_dir.parent / "photos"
    root.mkdir()
    settings.photo_root = root
    for name, size in [("wide.jpg", (300, 200)), ("tall.jpg", (200, 300))]:
        Image.new("RGB", size).save(root / name)
    service.photo_sources.save(
        "family",
        PhotoSourceInput(name="Family", kind="local", location=".", orientation="auto"),
    )
    r = client.get("/api/v1/photo-sources/family/images?device_id=bedroom")
    assert r.status_code == 200 and r.json()["items"][0]["name"] == "tall.jpg"
    accepted = client.post(
        "/api/v1/devices/bedroom/upload",
        json={"type": "photo_source", "source_id": "family"},
    )
    assert accepted.status_code == 202 and service.process_one()
    op = client.get("/api/v1/operations/" + accepted.json()["operation_id"]).json()
    assert op["status"] == "COMPLETED"
    with Image.open(BytesIO(client.get(op["result"]["url"]).content)) as image:
        assert image.size == (1200, 1600)