name: Deploy Docs

on:
  push:
    branches: ["main"]
  workflow_dispatch:

jobs:
  deploy:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: "3.11"

      - name: Install MkDocs
        run: pip install -r requirements.txt

      - name: Fetch language READMEs and update nav
        env:
          GITEA_URL: https://git.keshavanand.net
          ORG: foreign-thon
        run: |
          python3 << 'PYEOF'
          import urllib.request
          import json
          import os
          import re

          gitea_url = os.environ["GITEA_URL"]
          org = os.environ["ORG"]

          # Read languages.yml manually (no yaml dep needed)
          with open("languages.yml") as f:
              lines = f.readlines()

          languages = []
          current = {}
          for line in lines:
              line = line.strip()
              if line.startswith("- code:"):
                  if current:
                      languages.append(current)
                  current = {"code": line.split(":", 1)[1].strip()}
              elif line.startswith("name:") and current:
                  current["name"] = line.split(":", 1)[1].strip()
              elif line.startswith("repo:") and current:
                  current["repo"] = line.split(":", 1)[1].strip()
          if current:
              languages.append(current)

          nav_lines = []

          for lang in languages:
              code = lang["code"]
              name = lang["name"]
              repo = lang["repo"]

              readme_url = f"{gitea_url}/{org}/{repo}/raw/branch/main/README.md"
              try:
                  with urllib.request.urlopen(readme_url) as r:
                      content = r.read().decode("utf-8")
                  out_path = f"docs/language-packs/{code}.md"
                  with open(out_path, "w", encoding="utf-8") as f:
                      f.write(content)
                  nav_lines.append(f"      - '{name} ({code})': language-packs/{code}.md")
                  print(f"✓ {repo} → {out_path}")
              except Exception as e:
                  print(f"✗ {repo}: {e}")

          # Inject into mkdocs.yml between markers
          with open("mkdocs.yml") as f:
              yml = f.read()

          nav_block = "\n".join(nav_lines)
          new_yml = re.sub(
              r"      # LANGS_NAV_START.*?# LANGS_NAV_END",
              f"      # LANGS_NAV_START\n{nav_block}\n      # LANGS_NAV_END",
              yml,
              flags=re.DOTALL
          )

          with open("mkdocs.yml", "w") as f:
              f.write(new_yml)

          print(f"Nav updated with {len(nav_lines)} languages.")
          PYEOF

      - name: Build
        run: mkdocs build --strict

      - name: Deploy
        env:
          SSH_DEPLOY_KEY: ${{ secrets.SSH_DEPLOY_KEY }}
          SERVER_USER: ${{ secrets.SERVER_USER }}
          SERVER_HOST: ${{ secrets.SERVER_HOST }}
        run: |
          mkdir -p ~/.ssh
          echo "$SSH_DEPLOY_KEY" > ~/.ssh/deploy_key
          chmod 600 ~/.ssh/deploy_key
          ssh-keyscan -H $SERVER_HOST >> ~/.ssh/known_hosts
          ssh -i ~/.ssh/deploy_key $SERVER_USER@$SERVER_HOST \
            "rm -rf /var/www/foreignthon-docs/* && mkdir -p /var/www/foreignthon-docs"
          scp -i ~/.ssh/deploy_key -r site/* \
            $SERVER_USER@$SERVER_HOST:/var/www/foreignthon-docs/