#!/usr/bin/env python3
"""Render a per-spec table from a Playwright JSON report for a Gitea job summary (#136).

Reads the JSON report (default: tests/e2e/playwright-report.json) that run-e2e-check.sh copies out
of the e2e container, and prints a markdown table (one row per spec) to stdout. The CI step
redirects it into $GITHUB_STEP_SUMMARY. Stdlib only.
"""
import json
import os
import re
import sys

STATUS_ICON = {"expected": "✅", "unexpected": "❌", "skipped": "⏭️", "flaky": "⚠️"}

# A verdict alone still costs a log dive, and a killed or truncated job leaves no log to dive into
# (#161) — so a failing spec carries its first error into the table. Playwright errors are multi-line
# with a "Call log:", which a markdown table cell cannot hold, so they are flattened and clipped.
ERROR_CLIP = 300


def first_error(spec):
    """The first error message across a spec's test results, flattened for one table cell."""
    for test in spec.get("tests", []):
        for result in test.get("results", []):
            for error in result.get("errors", []):
                message = (error.get("message") or "").strip()
                if not message:
                    continue
                # Strip ANSI colour, collapse to one line, and keep it inside the cell.
                message = re.sub(r"\x1b\[[0-9;]*m", "", message)
                message = " ".join(message.split())
                if len(message) > ERROR_CLIP:
                    message = message[:ERROR_CLIP - 1].rstrip() + "…"
                # `|` would end the cell early.
                return message.replace("|", "\\|")
    return ""


def walk(suite, out):
    for spec in suite.get("specs", []):
        # A spec's status is carried on its test(s): expected/unexpected/skipped/flaky.
        statuses = [t.get("status") for t in spec.get("tests", [])]
        status = ("unexpected" if "unexpected" in statuses
                  else "flaky" if "flaky" in statuses
                  else "skipped" if statuses and all(s == "skipped" for s in statuses)
                  else "expected" if spec.get("ok", False)
                  else "unexpected")
        out.append({"file": spec.get("file") or suite.get("file") or suite.get("title", ""),
                    "title": spec.get("title", ""), "status": status,
                    "error": first_error(spec) if status in ("unexpected", "flaky") else ""})
    for child in suite.get("suites", []):
        walk(child, out)


def main(path):
    if not os.path.exists(path):
        print("## 🎭 e2e (Playwright)\n\n_No e2e report — the run did not reach the e2e step._")
        return 0
    with open(path) as fh:
        report = json.load(fh)
    specs = []
    for suite in report.get("suites", []):
        walk(suite, specs)

    print("## 🎭 e2e (Playwright)\n")
    stats = report.get("stats", {})
    if stats:
        print(f"**{stats.get('expected', 0)} passed · {stats.get('unexpected', 0)} failed · "
              f"{stats.get('flaky', 0)} flaky · {stats.get('skipped', 0)} skipped** "
              f"({round(stats.get('duration', 0) / 1000)}s)\n")
    if not specs:
        print("_No specs ran._")
        return 0
    # The failure column only earns its width when something failed.
    if any(s["error"] for s in specs):
        print("| Spec | Result | Why |")
        print("| ---- | :----: | --- |")
        for s in specs:
            print(f"| {s['file']} › {s['title']} | {STATUS_ICON.get(s['status'], '❔')} | {s['error']} |")
    else:
        print("| Spec | Result |")
        print("| ---- | :----: |")
        for s in specs:
            print(f"| {s['file']} › {s['title']} | {STATUS_ICON.get(s['status'], '❔')} |")
    return 0


if __name__ == "__main__":
    sys.exit(main(sys.argv[1] if len(sys.argv) > 1 else "tests/e2e/playwright-report.json"))