"""Tests for Excalidraw file support in ObsiGate."""

import json


EXCALIDRAW_SKELETON = {
    "type": "excalidraw",
    "version": 2,
    "elements": [],
    "appState": {"viewBackgroundColor": "#ffffff"},
    "files": {},
}

EXCALIDRAW_WITH_CONTENT = {
    "type": "excalidraw",
    "version": 2,
    "elements": [
        {
            "id": "rect-1",
            "type": "rectangle",
            "x": 100, "y": 200, "width": 300, "height": 150,
            "angle": 0, "strokeColor": "#1e1e1e",
            "backgroundColor": "#ffec99", "fillStyle": "solid",
            "strokeWidth": 2, "strokeStyle": "solid",
            "roughness": 1, "opacity": 100, "groupIds": [],
            "roundness": {"type": 3},
            "boundElements": None, "updated": 1,
            "link": None, "locked": False,
        },
        {
            "id": "text-1", "type": "text",
            "x": 150, "y": 260, "width": 200, "height": 30,
            "angle": 0, "strokeColor": "#1e1e1e",
            "backgroundColor": "transparent", "fillStyle": "solid",
            "strokeWidth": 2, "strokeStyle": "solid",
            "roughness": 1, "opacity": 100, "groupIds": [],
            "roundness": None, "boundElements": None,
            "updated": 1, "link": None, "locked": False,
            "text": "Hello Excalidraw", "fontSize": 20,
            "fontFamily": 1, "textAlign": "center",
            "verticalAlign": "middle", "containerId": "rect-1",
            "originalText": "Hello Excalidraw",
            "autoResize": True, "lineHeight": 1.25,
        },
    ],
    "appState": {"viewBackgroundColor": "#ffffff", "name": "My Diagram"},
    "files": {},
}


class TestExcalidrawDetection:
    """Test that the /api/file endpoint correctly detects .excalidraw files."""

    VAULT = "TestVault"

    def test_valid_excalidraw_file(self, client):
        """A valid .excalidraw file should return is_excalidraw: true."""
        path = "diagram.excalidraw"
        resp = client.post(
            f"/api/file/{self.VAULT}",
            json={"path": path, "content": json.dumps(EXCALIDRAW_WITH_CONTENT)},
        )
        assert resp.status_code == 200, resp.text

        resp = client.get(f"/api/file/{self.VAULT}", params={"path": path})
        assert resp.status_code == 200, resp.text
        data = resp.json()
        assert data["is_excalidraw"] is True
        assert "excalidraw_data" in data
        assert len(data["excalidraw_data"]["elements"]) == 2
        assert data["excalidraw_data"]["elements"][0]["type"] == "rectangle"
        assert data["title"] == "My Diagram"

    def test_empty_excalidraw_creation(self, client):
        """Creating a .excalidraw with empty content injects skeleton JSON."""
        path = "empty.excalidraw"
        resp = client.post(
            f"/api/file/{self.VAULT}",
            json={"path": path, "content": ""},
        )
        assert resp.status_code == 200, resp.text

        resp = client.get(f"/api/file/{self.VAULT}", params={"path": path})
        assert resp.status_code == 200, resp.text
        data = resp.json()
        assert data["is_excalidraw"] is True
        assert data["excalidraw_data"]["elements"] == []
        assert data["excalidraw_data"]["appState"]["viewBackgroundColor"] == "#ffffff"

    def test_invalid_json_excalidraw_fallback(self, client):
        """A .excalidraw with invalid JSON should show as text, not Excalidraw."""
        path = "corrupt.excalidraw"
        resp = client.post(
            f"/api/file/{self.VAULT}",
            json={"path": path, "content": "this is not valid json!!!"},
        )
        assert resp.status_code == 200, resp.text

        resp = client.get(f"/api/file/{self.VAULT}", params={"path": path})
        assert resp.status_code == 200, resp.text
        data = resp.json()
        assert not data.get("is_excalidraw")

    def test_json_without_excalidraw_type(self, client):
        """A .excalidraw with valid JSON but wrong type falls through."""
        path = "not-excalidraw.excalidraw"
        resp = client.post(
            f"/api/file/{self.VAULT}",
            json={"path": path, "content": '{"type":"something-else","data":[1,2,3]}'},
        )
        assert resp.status_code == 200, resp.text

        resp = client.get(f"/api/file/{self.VAULT}", params={"path": path})
        assert resp.status_code == 200, resp.text
        data = resp.json()
        assert not data.get("is_excalidraw")

    def test_excalidraw_in_tree(self, client):
        """A .excalidraw file appears in the file tree."""
        path = "tree-diagram.excalidraw"
        resp = client.post(
            f"/api/file/{self.VAULT}",
            json={"path": path, "content": json.dumps(EXCALIDRAW_SKELETON)},
        )
        assert resp.status_code == 200, resp.text

        resp = client.get(f"/api/browse/{self.VAULT}", params={"path": ""})
        assert resp.status_code == 200, resp.text
        items = resp.json()["items"]
        names = [i["name"] for i in items]
        assert "tree-diagram.excalidraw" in names, f"Not found in: {names}"

    def test_excalidraw_save_roundtrip(self, client):
        """Create, edit (PUT), and re-read an .excalidraw file."""
        path = "roundtrip.excalidraw"

        client.post(
            f"/api/file/{self.VAULT}",
            json={"path": path, "content": ""},
        )

        modified = dict(EXCALIDRAW_SKELETON)
        modified["elements"] = [{
            "id": "ellipse-1", "type": "ellipse",
            "x": 50, "y": 50, "width": 100, "height": 80,
            "angle": 0, "strokeColor": "#1e1e1e",
            "backgroundColor": "#a5d8ff", "fillStyle": "solid",
            "strokeWidth": 2, "strokeStyle": "solid",
            "roughness": 1, "opacity": 100, "groupIds": [],
            "roundness": {"type": 2},
            "boundElements": None, "updated": 1,
            "link": None, "locked": False,
        }]
        resp = client.put(
            f"/api/file/{self.VAULT}/save",
            params={"path": path, "backup": "false"},
            json={"content": json.dumps(modified)},
        )
        assert resp.status_code == 200, resp.text

        resp = client.get(f"/api/file/{self.VAULT}", params={"path": path})
        assert resp.status_code == 200, resp.text
        data = resp.json()
        assert data["is_excalidraw"] is True
        assert len(data["excalidraw_data"]["elements"]) == 1
        assert data["excalidraw_data"]["elements"][0]["type"] == "ellipse"