"""Compact metrics panel for overview pane right side.
Run: watch -n10 python3 bin/metrics.py
"""
import os
import sys
from datetime import datetime, timezone

sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
from log_append import read_entries

from rich.console import Console
from rich.panel import Panel
from rich.text import Text

console = Console(width=38)


def summarize(entries: list) -> tuple:
    today = datetime.now(timezone.utc).date().isoformat()
    today_entries = [e for e in entries if (e.get('ts') or '').startswith(today)]
    total = len(today_entries)
    kept = sum(1 for e in today_entries if e.get('kept'))
    projects: dict = {}
    for e in today_entries:
        p = e.get('project') or 'unknown'
        projects.setdefault(p, {'total': 0, 'kept': 0})
        projects[p]['total'] += 1
        if e.get('kept'):
            projects[p]['kept'] += 1
    return total, kept, projects


def render() -> None:
    entries = read_entries()
    total, kept, projects = summarize(entries)
    rate = f"{kept / total * 100:.0f}%" if total else "—"

    text = Text()
    text.append(f"Today:  {total} experiments\n", style="bold")
    text.append(f"Kept:   {kept}", style="green bold")
    text.append(f"  ({rate})\n\n", style="dim")

    if projects:
        text.append("Per project:\n", style="bold dim")
        for p, s in sorted(projects.items()):
            r = f"{s['kept']}/{s['total']}"
            bar = "█" * s['kept'] + "░" * (s['total'] - s['kept'])
            text.append(f"  {p[:14]:<14} {r:>5}  {bar[:8]}\n")
    else:
        text.append("No experiments today.", style="dim italic")

    console.print(Panel(
        text,
        title="[bold #DA251C]Metrics[/bold #DA251C]",
        border_style="#FFD802",
        expand=False,
    ))


if __name__ == '__main__':
    render()