#!/usr/bin/env python3
"""SessionEnd hook — append a journal entry to the vault's daily log. Fail-open.

The memsearch git sync is split into memsearch_sync.py (its own SessionEnd entry).
"""
import os
import sys
import subprocess
from datetime import datetime, timezone

sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
import config as config_mod
import hook_io
import session_state

JOURNAL_TEMPLATE = """---
summary: Daily session log
tags: [scope/global, type/log]
---
"""


def main():
    inp = hook_io.read_input()
    session_id = inp.session_id
    reason = inp.reason
    if not session_id:
        session_id = f"unknown-{os.getpid()}"

    cfg = config_mod.load_config()
    journal_dir = os.path.join(cfg.vault_path, "journal")
    date_str = datetime.now(timezone.utc).strftime("%Y-%m-%d")
    journal_path = os.path.join(journal_dir, f"{date_str}.md")

    try:
        os.makedirs(journal_dir, exist_ok=True)
    except Exception:
        pass

    if not os.path.exists(journal_path):
        try:
            with open(journal_path, "w") as f:
                f.write(JOURNAL_TEMPLATE)
        except Exception:
            pass

    touched = session_state.read_touches(session_id)
    touched_list = "\n".join(touched) if touched else "(none)"

    try:
        r = subprocess.run(
            ["git", "rev-parse", "--show-toplevel"],
            capture_output=True, text=True,
        )
        if r.returncode == 0 and r.stdout.strip():
            project = r.stdout.strip()
        else:
            project = os.environ.get("CLAUDE_PROJECT_DIR") or "unknown"
    except Exception:
        project = os.environ.get("CLAUDE_PROJECT_DIR") or "unknown"

    timestamp = datetime.now(timezone.utc).strftime("%Y-%m-%dT%H:%M:%SZ")

    entry = (
        "\n"
        f"## Session — {timestamp}\n"
        "\n"
        f"**Project:** {project}\n"
        f"**Reason:** {reason}\n"
        "**Vault notes touched:**\n"
        f"{touched_list}\n"
    )
    try:
        with open(journal_path, "a") as f:
            f.write(entry)
    except Exception:
        pass

    session_state.clear_touches(session_id)


if __name__ == "__main__":
    try:
        main()
    except Exception as e:
        print(f"[session-end] error: {e}", file=sys.stderr)
    sys.exit(0)