import json
import subprocess
from html.parser import HTMLParser
from pathlib import Path
from urllib.parse import urljoin


FRONTEND = Path(__file__).parents[1] / "frontend"
COMMANDS = FRONTEND / "commands.js"


class ScriptSourceParser(HTMLParser):
    def __init__(self):
        super().__init__()
        self.sources = []

    def handle_starttag(self, tag, attrs):
        if tag == "script":
            source = dict(attrs).get("src")
            if source:
                self.sources.append(source)


def test_filtered_command_runs_the_matching_action():
    script = f"""
const filterCommands = require({json.dumps(str(COMMANDS))});
let action = '';
const commands = [
  {{ name: 'Open whiteboard', run: () => {{ action = 'whiteboard'; }} }},
  {{ name: 'Refresh now', run: () => {{ action = 'refresh'; }} }},
];
const matches = filterCommands(commands, 'refresh');
if (matches.length !== 1) throw new Error(`expected one match, got ${{matches.length}}`);
matches[0].run();
if (action !== 'refresh') throw new Error(`expected refresh, got ${{action}}`);
"""

    subprocess.run(["node", "-e", script], check=True, capture_output=True, text=True)


def test_command_script_resolves_inside_dashboard_subpath():
    parser = ScriptSourceParser()
    parser.feed((FRONTEND / "index.html").read_text())
    command_source = next(source for source in parser.sources if source.endswith("commands.js"))

    assert urljoin(
        "https://forge.alexanderwhitestone.com/dashboard/", command_source
    ) == "https://forge.alexanderwhitestone.com/dashboard/static/commands.js"