#!/usr/bin/env python3
# SPDX-License-Identifier: MIT

import os
import sys
import requests

BOT_URL = "https://tldr-bot.starbeamrainbowlabs.com"

COMMENT_ERROR = """<!-- tldr-bot - errors -->

The [build](https://github.com/tldr-pages/tldr/actions/runs/{build_id}) for this PR failed with the following error(s) at commit
[`{commit_sha}`](https://github.com/{repo_slug}/commit/{commit_sha}):

```
{content}
```

Please fix the error(s) and push again.
"""

COMMENT_CHECK = """<!-- tldr-bot - check-results -->

Hello! I've noticed something unusual when checking this PR at commit
[`{commit_sha}`](https://github.com/{repo_slug}/commit/{commit_sha}):

{content}

Is this intended? If so, just ignore this comment. Otherwise, please double-check the commits.
"""

################################################################################


def post_comment(pr_id, body):
    endpoint = f"{BOT_URL}/comment/recreate"

    data = {"pr_id": pr_id, "body": body}

    try:
        with requests.post(endpoint, json=data) as r:
            if r.status_code != requests.codes.ok:
                print(
                    "Error: tldr-bot responded with code",
                    r.status_code,
                    file=sys.stderr,
                )
                print(r.text, file=sys.stderr)
                return False
    except requests.exceptions.RequestException as e:
        print("Error sending data to tldr-bot:", str(e), file=sys.stderr)
        return False

    return True


def main(action):
    if action not in ("report-errors", "report-check-results"):
        print("Unknown action:", action, file=sys.stderr)
        sys.exit(1)

    content = sys.stdin.read().strip()

    if action == "report-errors":
        comment_body = COMMENT_ERROR.format(
            build_id=BUILD_ID,
            commit_sha=COMMIT_SHA,
            repo_slug=REPO_SLUG,
            content=content,
        )
    elif action == "report-check-results":
        comment_body = COMMENT_CHECK.format(
            commit_sha=COMMIT_SHA,
            repo_slug=REPO_SLUG,
            content=content,
        )

    if post_comment(PR_ID, comment_body):
        print("Success.")
    else:
        print("Error sending data to tldr-bot!", file=sys.stderr)


################################################################################

if __name__ == "__main__":
    REPO_SLUG = os.environ.get("GITHUB_REPOSITORY")
    PR_ID = os.environ.get("PULL_REQUEST_ID")
    BUILD_ID = os.environ.get("GITHUB_RUN_ID")
    COMMIT_SHA = os.environ.get("COMMIT_SHA")

    if PR_ID is None or BUILD_ID is None or REPO_SLUG is None or COMMIT_SHA is None:
        print("Needed environment variables are not set.", file=sys.stderr)
        sys.exit(1)

    if PR_ID is None or PR_ID == "false":
        print("Not a pull request, refusing to run.", file=sys.stderr)
        sys.exit(0)

    if len(sys.argv) != 2:
        print("Usage:", sys.argv[0], "<ACTION>", file=sys.stderr)
        sys.exit(1)

    main(sys.argv[1])