"""그림 겹침 검사기. 겹친 것을 실제로 잡고 안 겹친 것은 안 잡는지 본다."""
import os
import subprocess
import sys
import tempfile
import unittest

ROOT = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
SCRIPT = os.path.join(ROOT, "scripts", "check-figure-overlap.py")

HEAD = '<svg xmlns="http://www.w3.org/2000/svg"><rect class="canvas" width="400" height="300"/>'
TAIL = "</svg>"


def svg(*rects):
    return HEAD + "".join(rects) + TAIL


def rect(cls, x, y, w, h):
    return f'<rect class="{cls}" x="{x}" y="{y}" width="{w}" height="{h}"/>'


def run(body):
    with tempfile.NamedTemporaryFile("w", suffix=".svg", delete=False,
                                     encoding="utf-8") as fh:
        fh.write(body)
        path = fh.name
    try:
        p = subprocess.run([sys.executable, SCRIPT, "--file", path],
                           capture_output=True, text=True, cwd=ROOT)
        return p.returncode, p.stdout + p.stderr
    finally:
        os.unlink(path)


class Overlap(unittest.TestCase):
    def test_안_겹치면_통과한다(self):
        code, out = run(svg(rect("group-box", 0, 0, 100, 100),
                            rect("group-box", 150, 0, 100, 100)))
        self.assertEqual(code, 0, out)
        self.assertIn("PASS", out)

    def test_맞닿기만_한_것은_겹친_것이_아니다(self):
        code, out = run(svg(rect("group-box", 0, 0, 100, 100),
                            rect("group-box", 100, 0, 100, 100)))
        self.assertEqual(code, 0, out)

    def test_구역_둘이_겹치면_잡는다(self):
        code, out = run(svg(rect("group-box", 0, 0, 100, 100),
                            rect("group-box", 50, 50, 100, 100)))
        self.assertEqual(code, 1)
        self.assertIn("구역 둘이 겹쳐 그려졌다", out)

    def test_이음_라벨이_상자에_먹히면_잡는다(self):
        code, out = run(svg(rect("node-shape kind-service", 100, 100, 120, 60),
                            rect("edge-label-bg", 80, 110, 60, 20)))
        self.assertEqual(code, 1)
        self.assertIn("이음 라벨이 상자에 먹혔다", out)

    def test_구역_이름이_서로를_덮으면_잡는다(self):
        code, out = run(svg(rect("group-label-bg", 10, 10, 120, 22),
                            rect("group-label-bg", 20, 12, 120, 22)))
        self.assertEqual(code, 1)
        self.assertIn("구역 이름이 서로를 덮는다", out)

    def test_상자_안에_든_상자는_설계다(self):
        """node-shape 가 group-box 안에 드는 것은 정상이라 잡지 않는다."""
        code, out = run(svg(rect("group-box", 0, 0, 200, 200),
                            rect("node-shape kind-service", 20, 20, 80, 40)))
        self.assertEqual(code, 0, out)

    def test_겹친_자리의_이름을_말해_준다(self):
        body = svg(rect("node-shape kind-service", 100, 100, 120, 60),
                   rect("edge-label-bg", 80, 110, 60, 20)) \
            .replace(TAIL, '<text class="edge-label" x="82" y="124">토큰</text>' + TAIL)
        code, out = run(body)
        self.assertEqual(code, 1)
        self.assertIn("토큰", out)


class Project(unittest.TestCase):
    @unittest.skipUnless(os.path.isdir(os.path.join(ROOT, "docs/keycloak/final/assets")),
                         "keycloak 그림이 없다")
    def test_프로젝트_단위로도_돈다(self):
        p = subprocess.run([sys.executable, SCRIPT, "keycloak"],
                           capture_output=True, text=True, cwd=ROOT)
        self.assertIn("FIGURE OVERLAP", p.stdout)


if __name__ == "__main__":
    unittest.main()