#!/usr/bin/env bash
# Changelog sync guard — stop hook (bash 版)

input=$(cat)

# === 豁免检查 1：环境变量跳过标志 ===
if [ -n "$CURSOR_SKIP_CHANGELOG" ]; then
    echo '{}'; exit 0
fi

# === 豁免检查 2：从 stdin 解析 composer_mode ===
mode=$(echo "$input" | python3 -c "import sys,json; print(json.load(sys.stdin).get('composer_mode',''))" 2>/dev/null || echo "")
if [ -n "$mode" ] && [ "$mode" != "agent" ]; then
    echo '{}'; exit 0
fi

# === 豁免检查 3：从 stdin 文本匹配 debug 上下文关键词 ===
if echo "$input" | grep -qiE '"mode"\s*:\s*"debug"|debug[\s_-]?mode|Debug Mode'; then
    echo '{}'; exit 0
fi

changelog=".cursor/changelog/changelog-headlines.md"
srcDir="art-agent"

# === 豁免检查 4：changelog 文件不存在 ===
if [ ! -f "$changelog" ]; then
    echo '{}'; exit 0
fi

clMtime=$(stat -c %Y "$changelog" 2>/dev/null || stat -f %m "$changelog" 2>/dev/null)

# === 豁免检查 5：ack 标记文件足够新 ===
ackFile=".cursor/changelog/.changelog-ack"
if [ -f "$ackFile" ]; then
    ackMtime=$(stat -c %Y "$ackFile" 2>/dev/null || stat -f %m "$ackFile" 2>/dev/null)
    if [ "$ackMtime" -ge "$clMtime" ] 2>/dev/null; then
        echo '{}'; exit 0
    fi
fi

# === 豁免检查 6：stdin 中无文件编辑证据 ===
if ! echo "$input" | grep -qE 'StrReplace|Write\s*tool|edit_file|file_write|write_to_file|Created file|Modified file|Wrote contents|"tool"\s*:\s*"(str_replace|write|edit)"'; then
    echo '{}'; exit 0
fi

# === 核心检查：是否有源文件比 changelog 更新 ===
newerFile=$(find "$srcDir" -type f \( -name "*.py" -o -name "*.tsx" -o -name "*.ts" -o -name "*.css" \) \
    ! -path "*/node_modules/*" ! -path "*/.next/*" ! -path "*/__pycache__/*" ! -path "*/venv/*" \
    -newer "$changelog" -print -quit 2>/dev/null)

if [ -n "$newerFile" ]; then
    fname=$(basename "$newerFile")
    msg="[Hook] Source file updated (e.g. $fname) but changelog not synced. Run dev-changelog Skill operation A NOW to write all three changelog layers."
    echo "{\"followup_message\":\"$msg\"}"
else
    echo '{}'
fi
exit 0