#!/usr/bin/env bash
set -uo pipefail

SESSION_DIR="/Users/exult/.claude/projects/-Users-exult-claude-workspace"
SKILL_DIR="/Users/exult/claude-workspace/.claude/skills"
REPORT="/Users/exult/claude-workspace/data/reports/skill-audit-$(date +%Y-%m-%d).md"
mkdir -p "$(dirname "$REPORT")"

python3 << 'PYEOF'
import os, json, glob

skill_dir = "/Users/exult/claude-workspace/.claude/skills"
session_dir = "/Users/exult/.claude/projects/-Users-exult-claude-workspace"
report_lines = ["# Skill Audit Report", ""]

# 1. Inventory
report_lines.append("## Skills Inventory")
report_lines.append("| Skill | Lines | Refs | Has Auth | Has Examples |")
report_lines.append("|-------|-------|------|----------|-------------|")
skills = {}
for d in sorted(os.listdir(skill_dir)):
    skill_path = os.path.join(skill_dir, d, "SKILL.md")
    if os.path.isfile(skill_path):
        with open(skill_path) as f:
            content = f.read()
        lines = len(content.split("\n"))
        refs_dir = os.path.join(skill_dir, d, "references")
        refs = len(os.listdir(refs_dir)) if os.path.isdir(refs_dir) else 0
        has_auth = "auth" in content.lower() or "token" in content.lower() or "jwt" in content.lower()
        has_examples = content.count("curl") + content.count("```") >= 3
        skills[d] = {"lines": lines, "refs": refs, "has_auth": has_auth, "has_examples": has_examples}
        report_lines.append(f"| {d} | {lines} | {refs} | {'Yes' if has_auth else 'NO'} | {'Yes' if has_examples else 'NO'} |")

report_lines.append("")

# 2. Session analysis
report_lines.append("## Recent Session Analysis")
sessions = sorted(glob.glob(os.path.join(session_dir, "*.jsonl")), key=os.path.getmtime, reverse=True)[:5]
skill_mentions = {s: 0 for s in skills}
total_tools = 0
total_errors = 0

for sf in sessions:
    with open(sf) as f:
        content = f.read()
    total_tools += content.count('"tool_use"')
    total_errors += content.lower().count('"is_error":true') + content.lower().count('"is_error": true')
    for s in skills:
        if s.lower() in content.lower():
            skill_mentions[s] += 1

report_lines.append(f"Sessions analyzed: {len(sessions)}")
report_lines.append(f"Total tool calls: {total_tools}")
report_lines.append(f"Total errors: {total_errors}")
report_lines.append(f"Error rate: {total_errors/max(total_tools,1)*100:.1f}%")
report_lines.append("")

# 3. Usage
report_lines.append("## Skill Usage")
for s, count in sorted(skill_mentions.items(), key=lambda x: -x[1]):
    status = f"**{count} sessions**" if count > 0 else "unused"
    report_lines.append(f"- {s}: {status}")
report_lines.append("")

# 4. Improvement suggestions
report_lines.append("## Improvement Suggestions")
for s, info in skills.items():
    issues = []
    if not info["has_auth"]: issues.append("missing auth recipe")
    if not info["has_examples"]: issues.append("needs more code examples")
    if info["lines"] < 40: issues.append(f"too short ({info['lines']} lines)")
    if skill_mentions.get(s, 0) == 0: issues.append("unused - consider removing or documenting use case")
    if issues:
        report_lines.append(f"- **{s}**: {', '.join(issues)}")

report = "\n".join(report_lines)
with open(os.environ.get("REPORT_PATH", "/tmp/skill-audit.md"), "w") as f:
    f.write(report)
print(report)
PYEOF