"""Refresh all stale documentation — relationships and repo summaries."""

import sys
import os
from pathlib import Path

# Load .env if present
_env_file = Path(__file__).parent / ".env"
if _env_file.exists():
    for line in _env_file.read_text().splitlines():
        line = line.strip()
        if line and not line.startswith("#") and "=" in line:
            key, _, val = line.partition("=")
            os.environ.setdefault(key.strip(), val.strip())

sys.path.insert(0, os.path.dirname(__file__))

from db import GraphDB
from docgen import generate_relationship_doc, generate_repo_doc

REPO_DIR = os.environ.get("REPO_DIR", os.path.join(os.path.dirname(__file__), "repos", "target"))


def refresh_stale():
    db = GraphDB()

    print(f"\n{'='*60}")
    print("Refreshing stale documentation")
    print(f"{'='*60}")

    stats_before = db.get_stats()
    print(f"\nBefore: {stats_before['stale_relationships']} stale relationships")

    # Refresh stale relationship docs
    stale_rels = db.get_stale_relationships()
    if stale_rels:
        print(f"\n[1/2] Regenerating {len(stale_rels)} stale relationship docs...")
        for i, rel in enumerate(stale_rels):
            doc = generate_relationship_doc(
                rel["from_file"], rel["from_doc"] or "",
                rel["to_file"], rel["to_doc"] or "",
            )
            db.update_relationship_doc(rel["from_file"], rel["to_file"], doc)
            if (i + 1) % 5 == 0 or (i + 1) == len(stale_rels):
                print(f"  Refreshed {i+1}/{len(stale_rels)}")
    else:
        print("\n[1/2] No stale relationships.")

    # Refresh stale repo docs
    stale_repos = db.get_stale_repos()
    if stale_repos:
        print(f"\n[2/2] Regenerating {len(stale_repos)} stale repo docs...")
        for repo in stale_repos:
            file_docs = db.get_repo_files_docs(repo["name"])
            priority_names = ["echo.go", "router.go", "context.go", "group.go", "main.go", "server.go"]
            entry_files = []
            for name in priority_names:
                for path, doc in file_docs:
                    if path.endswith(name) and doc:
                        entry_files.append((path, doc))
                        break

            readme_path = os.path.join(REPO_DIR, "README.md")
            readme = ""
            if os.path.exists(readme_path):
                with open(readme_path) as f:
                    readme = f.read()

            repo_doc = generate_repo_doc(readme, entry_files)
            db.update_repo_doc(repo["name"], repo_doc)
            print(f"  Refreshed repo: {repo['name']}")
    else:
        print("\n[2/2] No stale repos.")

    stats_after = db.get_stats()
    print(f"\n{'='*60}")
    print("Refresh complete!")
    print(f"  Stale rels:  {stats_before['stale_relationships']} → {stats_after['stale_relationships']}")
    print(f"{'='*60}")

    db.close()


if __name__ == "__main__":
    refresh_stale()