#!/usr/bin/env python3
from __future__ import annotations

import json
import base64
import os
import shutil
import subprocess
import sys
import tempfile
from pathlib import Path


ROOT = Path(__file__).resolve().parents[1]
SCHEMAS = ROOT / "schemas"
TEMPLATES = ROOT / "templates"
EXAMPLE_CARD = ROOT / "examples" / "card"
EXAMPLE_SERIES = ROOT / "examples" / "series" / "series.json"


def load_json(path: Path) -> dict:
    with path.open(encoding="utf-8") as stream:
        value = json.load(stream)
    if not isinstance(value, dict):
        raise AssertionError(f"{path}: korzeń JSON musi być obiektem")
    return value


def check_json_files() -> None:
    for path in sorted(SCHEMAS.glob("*.json")):
        schema = load_json(path)
        assert schema.get("$schema", "").endswith("2020-12/schema"), path

    for path in sorted(TEMPLATES.glob("*.json")):
        template = load_json(path)
        assert template.get("schema") == "esc-card-template.v1", path
        assert template.get("emitters", {}).get("latex"), path
        assert template.get("emitters", {}).get("html"), path

    card = load_json(EXAMPLE_CARD / "json" / "card_source.json")
    assert card.get("schema") == "esc-card-source.v1"
    assert card.get("sections")
    assert card.get("educational_requirements")

    series = load_json(EXAMPLE_SERIES)
    assert series.get("version") == 1
    assert series.get("cards")


def check_optional_json_schema() -> None:
    try:
        import jsonschema
    except ModuleNotFoundError:
        if os.environ.get("CARD_LAYOUTS_REQUIRE_JSONSCHEMA") == "1":
            raise AssertionError("brak pakietu jsonschema wymaganego przez pełną kontrolę")
        print("INFO: jsonschema nie jest zainstalowany; wykonuję walidację generatora.")
        return

    pairs = [
        (SCHEMAS / "card-source.schema.json", EXAMPLE_CARD / "json" / "card_source.json"),
        (SCHEMAS / "series.schema.json", EXAMPLE_SERIES),
    ]
    pairs.extend(
        (SCHEMAS / "card-template.schema.json", path)
        for path in sorted(TEMPLATES.glob("*.json"))
    )
    for schema_path, document_path in pairs:
        jsonschema.Draft202012Validator(load_json(schema_path)).validate(load_json(document_path))


def check_render() -> None:
    subprocess.run(
        [sys.executable, str(ROOT / "tools" / "render_card.py"), str(EXAMPLE_CARD)],
        cwd=ROOT,
        check=True,
    )

    tex_path = EXAMPLE_CARD / "build" / "tex" / "main.tex"
    html_path = EXAMPLE_CARD / "build" / "html" / "index.html"
    css_path = EXAMPLE_CARD / "build" / "html" / "style.css"
    for path in (tex_path, html_path, css_path):
        if not path.is_file() or path.stat().st_size == 0:
            raise AssertionError(f"brak wygenerowanego pliku: {path}")

    tex = tex_path.read_text(encoding="utf-8")
    html = html_path.read_text(encoding="utf-8")
    for marker in ("DEMO-01", "IP WO", "INF04", "KARTA PRACY"):
        if marker not in tex:
            raise AssertionError(f"TeX nie zawiera znacznika {marker!r}")
        if marker not in html:
            raise AssertionError(f"HTML nie zawiera znacznika {marker!r}")
    if "\x00" in html:
        raise AssertionError("HTML zawiera bajt NUL po rozwinięciu placeholderów")
    if not any(r"\qrcode[" in line and "height=" in line for line in tex.splitlines()):
        raise AssertionError("TeX nie zawiera kodu QR z tabliczki")
    for expected_url in (
        "https://demo.example.edu/cards/demo-01",
        "https://gitea.example.edu/edu/cards/demo-01",
    ):
        if expected_url not in tex or expected_url not in html:
            raise AssertionError(f"brak adresu nagłówka {expected_url!r}")
    if tex.count(r"\qrcode[level=L,height=22mm]") < 2:
        raise AssertionError("TeX nie zawiera obu kodów QR nagłówka")
    for marker in ("resource-qr-repository", "resource-qr-page"):
        if marker not in html:
            raise AssertionError(f"HTML nie zawiera komórki {marker!r}")
    for marker in ('class="title-qr"', 'class="code-subblock"'):
        if marker not in html:
            raise AssertionError(f"HTML nie zawiera znacznika {marker!r}")


def check_section_assets() -> None:
    with tempfile.TemporaryDirectory(prefix="card-layouts-assets-") as temp_dir:
        card_root = Path(temp_dir) / "card"
        shutil.copytree(EXAMPLE_CARD, card_root, ignore=shutil.ignore_patterns("build"))
        source_path = card_root / "json" / "card_source.json"
        source = load_json(source_path)
        source["template"] = str(ROOT / "templates" / "karta-klasyczna.json")
        source["generated"] = {
            "tex": "build/tex/main.tex",
            "html": "build/html/index.html",
            "html_css": "build/html/style.css",
        }
        source["sections"][0]["content_tex"] += (
            r" \textbf{Widok \texttt{GDB}.}"
            "\\begin{verbatim}stemctl test demo\\end{verbatim}"
        )
        source["sections"][0]["assets"] = [
            {
                "path": "assets/debug-screen.png",
                "caption": "Kontrolny zrzut debuggera.",
                "label": "fig:debug-screen",
                "alt": "Zrzut debuggera",
                "kind": "screenshot",
                "width": 0.96,
            }
        ]
        source["sections"][0]["steps"][0]["figure_refs"] = ["fig:debug-screen"]
        source_path.write_text(json.dumps(source, ensure_ascii=False, indent=2) + "\n", encoding="utf-8")

        asset_path = card_root / "doc" / "assets" / "debug-screen.png"
        asset_path.parent.mkdir(parents=True, exist_ok=True)
        asset_path.write_bytes(
            base64.b64decode(
                "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNk+A8AAQUBAScY42YAAAAASUVORK5CYII="
            )
        )
        subprocess.run(
            [sys.executable, str(ROOT / "tools" / "render_card.py"), str(card_root)],
            cwd=ROOT,
            check=True,
            stdout=subprocess.DEVNULL,
        )
        tex = (card_root / "build" / "tex" / "main.tex").read_text(encoding="utf-8")
        html = (card_root / "build" / "html" / "index.html").read_text(encoding="utf-8")
        copied_asset = card_root / "build" / "html" / "figures" / "debug-screen.png"
        for marker in ("fig:debug-screen", "debug-screen.png", "Kontrolny zrzut debuggera"):
            if marker not in tex:
                raise AssertionError(f"TeX assetu nie zawiera znacznika {marker!r}")
            if marker not in html:
                raise AssertionError(f"HTML assetu nie zawiera znacznika {marker!r}")
        if "\x00" in html:
            raise AssertionError("HTML assetu zawiera bajt NUL")
        if r"\begin{verbatim}" in html or r"\end{verbatim}" in html:
            raise AssertionError("HTML zawiera surowe środowisko verbatim")
        if "<pre><code>stemctl test demo</code></pre>" not in html:
            raise AssertionError("HTML nie zawiera wyrenderowanego bloku verbatim")
        if not copied_asset.is_file():
            raise AssertionError(f"asset nie został skopiowany: {copied_asset}")


def check_external_references() -> None:
    with tempfile.TemporaryDirectory(prefix="card-layouts-references-") as temp_dir:
        root = Path(temp_dir)
        card_root = root / "card"
        registry_root = root / "registry"
        shutil.copytree(EXAMPLE_CARD, card_root, ignore=shutil.ignore_patterns("build"))
        (registry_root / "json").mkdir(parents=True)
        (registry_root / "docs").mkdir()

        registry_uuid = "03403a8a-e20d-5b17-9004-26d9fe6c3003"
        strategy_uuid = "1ecfc474-4fbd-5a56-8ef1-80ae557761d0"
        card_uuid = "4abec2d9-79e9-5dca-9040-c60669f51ff8"
        registry = {
            "schema": "esc-reference-registry.v1",
            "uuid": registry_uuid,
            "name": "test-registry",
            "title": "Rejestr testowy",
            "root_path": "..",
            "base_url": "https://example.test/materials/",
            "entries": [
                {
                    "uuid": strategy_uuid,
                    "kind": "strategy",
                    "code": "M02",
                    "title": "Breakpointy",
                    "path": "docs/M02.md",
                },
                {
                    "uuid": card_uuid,
                    "kind": "card",
                    "title": "Wskaźniki i tablice",
                    "path": "docs/card.md",
                },
            ],
        }
        registry_path = registry_root / "json" / "reference_registry.json"
        registry_path.write_text(
            json.dumps(registry, ensure_ascii=False, indent=2) + "\n",
            encoding="utf-8",
        )
        (registry_root / "docs" / "M02.md").write_text("# M02\n", encoding="utf-8")
        (registry_root / "docs" / "card.md").write_text("# Karta\n", encoding="utf-8")

        source_path = card_root / "json" / "card_source.json"
        source = load_json(source_path)
        source["template"] = str(ROOT / "templates" / "karta-klasyczna.json")
        source["reference_registries"] = [
            {"uuid": registry_uuid, "source": str(registry_path)}
        ]
        source["sections"][0]["steps"][0]["references"] = [
            {"kind": "strategy", "registry_uuid": registry_uuid, "uuid": strategy_uuid},
            {"kind": "card", "registry_uuid": registry_uuid, "uuid": card_uuid},
        ]
        source_path.write_text(
            json.dumps(source, ensure_ascii=False, indent=2) + "\n",
            encoding="utf-8",
        )

        subprocess.run(
            [sys.executable, str(ROOT / "tools" / "render_card.py"), str(card_root)],
            cwd=ROOT,
            check=True,
            stdout=subprocess.DEVNULL,
        )
        tex = (card_root / "build" / "tex" / "main.tex").read_text(encoding="utf-8")
        html = (card_root / "build" / "html" / "index.html").read_text(encoding="utf-8")
        expected = (
            "https://example.test/materials/docs/M02.md",
            "https://example.test/materials/docs/card.md",
            "M02",
            "Wskaźniki i tablice",
        )
        for marker in expected:
            if marker not in tex:
                raise AssertionError(f"TeX referencji nie zawiera {marker!r}")
            if marker not in html:
                raise AssertionError(f"HTML referencji nie zawiera {marker!r}")
        if f'data-reference-uuid="{strategy_uuid}"' not in html:
            raise AssertionError("HTML nie zachowuje UUID rozwiązanej strategii")
        if "<code>M02</code>" not in html:
            raise AssertionError("HTML nie pokazuje kodu strategii jako etykiety")

def main() -> int:
    check_json_files()
    check_optional_json_schema()
    check_render()
    check_section_assets()
    check_external_references()
    print("PASS: schematy, layouty, przykład serii oraz render TeX/HTML są spójne.")
    return 0


if __name__ == "__main__":
    raise SystemExit(main())