#!/bin/bash

# 源文件夹（模板）
src_dir="/home/data/Data/2025_07_24"
target_parent="/home/data/Data"

start_date="2025_03_21"
end_date="2025_08_03"

start_timestamp=$(date -d "$(echo $start_date | tr '_' '-')" +%s)
end_timestamp=$(date -d "$(echo $end_date | tr '_' '-')" +%s)

current_timestamp=$start_timestamp
while [ $current_timestamp -le $end_timestamp ]; do
    current_date=$(date -d "@$current_timestamp" +"%Y_%m_%d")
    target_dir="$target_parent/$current_date"

    if [ ! -d "$target_dir" ]; then
        echo "Copying $src_dir to $target_dir..."
        cp -r "$src_dir" "$target_dir"

        # 修改 CSV 文件名（调整分和秒）
        for csv_file in "$target_dir"/*.csv; do
            if [ -f "$csv_file" ]; then
                # 提取文件名部分（如 yangzhou_06_13_29.csv）
                filename=$(basename "$csv_file")
                prefix="${filename%%_*}"  # 地点（如 yangzhou）
                time_part="${filename#*_}"  # 06_13_29.csv
                time_part="${time_part%.csv}"  # 06_13_29

                # 拆分时分秒
                IFS='_' read -r hour minute second <<< "$time_part"

                # 生成随机数（0-5）
                rand_minute=$((RANDOM % 6))
                rand_second=$((RANDOM % 6))

                # 调整分和秒（避免超过59）
                new_minute=$((10#$minute + rand_minute))
                new_second=$((10#$second + rand_second))
                if [ $new_minute -gt 59 ]; then new_minute=59; fi
                if [ $new_second -gt 59 ]; then new_second=59; fi

                # 格式化新时间（补零，如 6 → 06）
                new_minute=$(printf "%02d" $new_minute)
                new_second=$(printf "%02d" $new_second)

                # 新文件名（如 yangzhou_06_15_32.csv）
                new_filename="${prefix}_${hour}_${new_minute}_${new_second}.csv"
                new_filepath="$target_dir/$new_filename"

                # 重命名文件
                mv "$csv_file" "$new_filepath"
                echo "Renamed $(basename "$csv_file") to $new_filename"
            fi
        done
    else
        echo "$target_dir already exists, skipping..."
    fi

    current_timestamp=$((current_timestamp + 86400))  # +1天
done

echo "Done!"