build_travel_map.sh

#!/usr/bin/env bash
set -euo pipefail
shopt -s nullglob

CSV="photos.csv"

echo "Name,Latitude,Longitude,Image" > "$CSV"

for file in *.jpg *.JPG *.jpeg *.JPEG; do
    [[ -f "$file" ]] || continue

    base="${file%.*}"
    out="${base}_sm.jpg"

    echo "Processing $file"

    # 1. 縮圖（寬 1024，不放大小圖）
    convert "$file" -resize '1024x>' "$out"

    # 2. 複製完整 EXIF
    exiftool -overwrite_original \
        -tagsFromFile "$file" \
        -all:all \
        "$out" >/dev/null

    # 3. 取得 GPS
    lat=$(exiftool -n -GPSLatitude -s3 "$file")
    lon=$(exiftool -n -GPSLongitude -s3 "$file")

    if [[ -n "$lat" && -n "$lon" ]]; then
        echo "${base},${lat},${lon},${out}" >> "$CSV"
        echo "  GPS: $lat, $lon"
    else
        echo "  No GPS found"
    fi
done

echo
echo "Done!"
echo "Generated:"
echo "  - *_sm.jpg"
echo "  - $CSV"