from app.domains.rendering.workflow_config_utils import (
    build_preset_workflow_config,
    canonicalize_workflow_config,
    extract_runtime_workflow,
)


def test_build_preset_workflow_config_creates_canonical_dag():
    config = build_preset_workflow_config(
        "still",
        {"render_engine": "cycles", "samples": 256, "resolution": [1920, 1080]},
    )

    assert config["version"] == 1
    assert config["ui"]["preset"] == "still"
    assert [node["step"] for node in config["nodes"]] == [
        "order_line_setup",
        "resolve_template",
        "blender_still",
        "output_save",
    ]
    render_node = next(node for node in config["nodes"] if node["step"] == "blender_still")
    assert render_node["params"]["width"] == 1920
    assert render_node["params"]["height"] == 1080


def test_canonicalize_workflow_config_migrates_legacy_preset():
    legacy = {
        "type": "turntable",
        "params": {"render_engine": "cycles", "samples": 64, "fps": 24},
    }

    canonical = canonicalize_workflow_config(legacy)

    assert canonical["version"] == 1
    assert canonical["ui"]["preset"] == "turntable"
    assert any(node["step"] == "blender_turntable" for node in canonical["nodes"])


def test_extract_runtime_workflow_uses_canonical_render_node_params():
    config = build_preset_workflow_config(
        "multi_angle",
        {"render_engine": "cycles", "samples": 128, "angles": [0, 45, 90]},
    )

    preset, params = extract_runtime_workflow(config)

    assert preset == "multi_angle"
    assert params["render_engine"] == "cycles"
    assert params["samples"] == 128
    assert params["angles"] == [0.0, 45.0, 90.0]


def test_canonicalize_legacy_custom_config_preserves_edges():
    legacy = {
        "type": "custom",
        "nodes": [
            {
                "id": "input",
                "type": "inputNode",
                "position": {"x": 0, "y": 0},
                "data": {"label": "Input", "pipeline_step": "resolve_step_path", "params": {}},
            },
            {
                "id": "render",
                "type": "renderNode",
                "position": {"x": 200, "y": 0},
                "data": {"label": "Render", "pipeline_step": "blender_still", "params": {"resolution": [1024, 1024]}},
            },
        ],
        "edges": [
            {"id": "e1", "source": "input", "target": "render"},
        ],
    }

    canonical = canonicalize_workflow_config(legacy)

    assert canonical["ui"]["preset"] == "custom"
    assert canonical["edges"] == [{"id": "e1", "from": "input", "to": "render"}]


def test_extract_runtime_workflow_converts_resolution_to_dimensions():
    config = build_preset_workflow_config(
        "turntable",
        {"resolution": [1920, 1080], "fps": 24},
    )

    preset, params = extract_runtime_workflow(config)

    assert preset == "turntable"
    assert params["width"] == 1920
    assert params["height"] == 1080
    assert "resolution" not in params