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| 1 | + | #!/usr/bin/env bash | |
| 2 | + | set -euo pipefail | |
| 3 | + | ||
| 4 | + | # Usage: | |
| 5 | + | # ./pkpass2png <pkpass_path_or_url> [output.png] | |
| 6 | + | # | |
| 7 | + | # Examples: | |
| 8 | + | # ./pkpass2png ticket.pkpass out.png | |
| 9 | + | # ./pkpass2png "https://example.com/ticket.pkpass" out.png | |
| 10 | + | ||
| 11 | + | INPUT="${1:-}" | |
| 12 | + | OUT="${2:-ticket.png}" | |
| 13 | + | ||
| 14 | + | if [[ -z "$INPUT" ]]; then | |
| 15 | + | echo "Usage: $0 <pkpass_path_or_url> [output.png]" >&2 | |
| 16 | + | exit 2 | |
| 17 | + | fi | |
| 18 | + | ||
| 19 | + | need_cmd() { | |
| 20 | + | command -v "$1" >/dev/null 2>&1 || { | |
| 21 | + | echo "Missing dependency: $1" >&2 | |
| 22 | + | exit 2 | |
| 23 | + | } | |
| 24 | + | } | |
| 25 | + | ||
| 26 | + | need_cmd jq | |
| 27 | + | need_cmd zint | |
| 28 | + | need_cmd magick | |
| 29 | + | need_cmd unzip | |
| 30 | + | ||
| 31 | + | # Pick a downloader if needed | |
| 32 | + | is_url=0 | |
| 33 | + | if [[ "$INPUT" =~ ^https?:// ]]; then | |
| 34 | + | is_url=1 | |
| 35 | + | if command -v curl >/dev/null 2>&1; then | |
| 36 | + | DL='curl -L --fail --silent --show-error' | |
| 37 | + | elif command -v wget >/dev/null 2>&1; then | |
| 38 | + | DL='wget -qO-' | |
| 39 | + | else | |
| 40 | + | echo "Need curl or wget to download URLs" >&2 | |
| 41 | + | exit 2 | |
| 42 | + | fi | |
| 43 | + | fi | |
| 44 | + | ||
| 45 | + | tmp=$(mktemp -d) | |
| 46 | + | trap 'rm -rf "$tmp"' EXIT | |
| 47 | + | ||
| 48 | + | PKPASS_FILE="$tmp/pass.pkpass" | |
| 49 | + | EXTRACT_DIR="$tmp/extracted" | |
| 50 | + | mkdir -p "$EXTRACT_DIR" | |
| 51 | + | ||
| 52 | + | # ---- Acquire pkpass (download or copy) ---- | |
| 53 | + | if [[ "$is_url" -eq 1 ]]; then | |
| 54 | + | # download to file | |
| 55 | + | if [[ "$DL" == curl* ]]; then | |
| 56 | + | $DL "$INPUT" -o "$PKPASS_FILE" | |
| 57 | + | else | |
| 58 | + | $DL "$INPUT" > "$PKPASS_FILE" | |
| 59 | + | fi | |
| 60 | + | else | |
| 61 | + | # local file | |
| 62 | + | if [[ ! -f "$INPUT" ]]; then | |
| 63 | + | echo "Input file not found: $INPUT" >&2 | |
| 64 | + | exit 2 | |
| 65 | + | fi | |
| 66 | + | cp -f "$INPUT" "$PKPASS_FILE" | |
| 67 | + | fi | |
| 68 | + | ||
| 69 | + | # ---- Extract pkpass (zip) ---- | |
| 70 | + | unzip -q "$PKPASS_FILE" -d "$EXTRACT_DIR" | |
| 71 | + | ||
| 72 | + | PASS_JSON="$EXTRACT_DIR/pass.json" | |
| 73 | + | if [[ ! -f "$PASS_JSON" ]]; then | |
| 74 | + | echo "pass.json not found inside pkpass" >&2 | |
| 75 | + | exit 2 | |
| 76 | + | fi | |
| 77 | + | ||
| 78 | + | # Choose base image: prefer strip.png if present, else background.png | |
| 79 | + | if [[ -f "$EXTRACT_DIR/strip.png" ]]; then | |
| 80 | + | BASE_IMG="$EXTRACT_DIR/strip.png" | |
| 81 | + | elif [[ -f "$EXTRACT_DIR/background.png" ]]; then | |
| 82 | + | BASE_IMG="$EXTRACT_DIR/background.png" | |
| 83 | + | else | |
| 84 | + | echo "Neither strip.png nor background.png found in pkpass" >&2 | |
| 85 | + | exit 2 | |
| 86 | + | fi | |
| 87 | + | ||
| 88 | + | # Work files | |
| 89 | + | MSG_FILE="$tmp/msg.txt" | |
| 90 | + | BARCODE_RAW="$tmp/barcode_raw.png" | |
| 91 | + | BARCODE_CARD="$tmp/barcode_card.png" | |
| 92 | + | font="DejaVu-Sans" | |
| 93 | + | ||
| 94 | + | # Find largest pointsize <= max_pt that fits within max_width pixels | |
| 95 | + | fit_pt() { | |
| 96 | + | local text="$1" max_width="$2" max_pt="$3" font="$4" | |
| 97 | + | local pt w | |
| 98 | + | for ((pt=max_pt; pt>=9; pt--)); do | |
| 99 | + | w=$(magick -font "$font" -pointsize "$pt" \ | |
| 100 | + | -background none label:"$text" -format '%w' info:) | |
| 101 | + | if [ "$w" -le "$max_width" ]; then | |
| 102 | + | echo "$pt" | |
| 103 | + | return | |
| 104 | + | fi | |
| 105 | + | done | |
| 106 | + | echo 9 | |
| 107 | + | } | |
| 108 | + | ||
| 109 | + | # ---- Extract fields ---- | |
| 110 | + | org=$(jq -r '.organizationName // ""' "$PASS_JSON") | |
| 111 | + | logoText=$(jq -r '.logoText // empty' "$PASS_JSON") | |
| 112 | + | date=$(jq -r '.eventTicket.headerFields[]? | select(.key=="date") | .value' "$PASS_JSON" | head -n1) | |
| 113 | + | event=$(jq -r '.eventTicket.primaryFields[]? | select(.key=="event") | .value' "$PASS_JSON" | head -n1) | |
| 114 | + | ||
| 115 | + | loc_label=$(jq -r '.eventTicket.secondaryFields[]? | select(.key=="location") | .label' "$PASS_JSON" | head -n1) | |
| 116 | + | loc_value=$(jq -r '.eventTicket.secondaryFields[]? | select(.key=="location") | .value' "$PASS_JSON" | head -n1) | |
| 117 | + | ||
| 118 | + | seat_label=$(jq -r '.eventTicket.secondaryFields[]? | select(.key=="seat") | .label' "$PASS_JSON" | head -n1) | |
| 119 | + | seat_value=$(jq -r '.eventTicket.secondaryFields[]? | select(.key=="seat") | .value' "$PASS_JSON" | head -n1) | |
| 120 | + | ||
| 121 | + | price_label=$(jq -r '.eventTicket.auxiliaryFields[]? | select(.key=="price") | .label' "$PASS_JSON" | head -n1) | |
| 122 | + | price_value=$(jq -r '.eventTicket.auxiliaryFields[]? | select(.key=="price") | .value' "$PASS_JSON" | head -n1) | |
| 123 | + | ||
| 124 | + | alt_text=$(jq -r '.barcode.altText // ""' "$PASS_JSON") | |
| 125 | + | ||
| 126 | + | fg=$(jq -r '.foregroundColor // "rgb(255,255,255)"' "$PASS_JSON") | |
| 127 | + | label=$(jq -r '.labelColor // "rgb(200,200,200)"' "$PASS_JSON") | |
| 128 | + | ||
| 129 | + | # ---- Canvas size ---- | |
| 130 | + | W=$(magick identify -format '%w' "$BASE_IMG") # [1] | |
| 131 | + | H=$(magick identify -format '%h' "$BASE_IMG") # [1] | |
| 132 | + | ||
| 133 | + | # ---- Proportional layout constants ---- | |
| 134 | + | # Margins/padding (percentages tuned to your 360x440 case) | |
| 135 | + | M=$(( W * 4 / 100 )) # ~4% of width (360 -> 14) | |
| 136 | + | [ "$M" -lt 10 ] && M=10 | |
| 137 | + | ||
| 138 | + | TOP=$(( H * 3 / 100 )) # ~3% of height (440 -> 13) | |
| 139 | + | COL_GAP=$(( W * 4 / 100 )) # ~4% of width | |
| 140 | + | [ "$COL_GAP" -lt 10 ] && COL_GAP=10 | |
| 141 | + | COL_W=$(((W - 2*M - COL_GAP)/2)) | |
| 142 | + | ||
| 143 | + | # Barcode sizing derived from width | |
| 144 | + | BC_SIZE=$(( W * 52 / 100 )) # 360 -> 187 | |
| 145 | + | [ "$BC_SIZE" -lt 150 ] && BC_SIZE=150 # keep scannable | |
| 146 | + | BOTTOM_MARGIN=$(( H * 4 / 100 )) # 440 -> 17 | |
| 147 | + | [ "$BOTTOM_MARGIN" -lt 10 ] && BOTTOM_MARGIN=10 | |
| 148 | + | BAR_GAP=$(( H * 3 / 100 )) # 440 -> 13 | |
| 149 | + | [ "$BAR_GAP" -lt 10 ] && BAR_GAP=10 | |
| 150 | + | ||
| 151 | + | # Font maxima (scale with height) | |
| 152 | + | org_max=$(( H * 4 / 100 )) # 440 -> 17 | |
| 153 | + | date_max=$(( H * 3 / 100 )) # 440 -> 13 | |
| 154 | + | event_max=$(( H * 5 / 100 )) # 440 -> 22 | |
| 155 | + | val_max=$(( H * 4 / 100 )) # 440 -> 17 | |
| 156 | + | [ "$org_max" -lt 12 ] && org_max=12 | |
| 157 | + | [ "$date_max" -lt 11 ] && date_max=11 | |
| 158 | + | [ "$event_max" -lt 14 ] && event_max=14 | |
| 159 | + | [ "$val_max" -lt 12 ] && val_max=12 | |
| 160 | + | ||
| 161 | + | label_pt=$(( H * 3 / 100 )) # 440 -> 13 | |
| 162 | + | [ "$label_pt" -lt 11 ] && label_pt=11 | |
| 163 | + | ||
| 164 | + | # Vertical gaps (scale with height) | |
| 165 | + | gap1=$(( H * 7 / 100 )) # 440 -> 30 | |
| 166 | + | gap2=$(( H * 7 / 100 )) # 440 -> 30 | |
| 167 | + | gap3=$(( H * 4 / 100 )) # 440 -> 17 | |
| 168 | + | gap4=$(( H * 6 / 100 )) # 440 -> 22 | |
| 169 | + | gap5=$(( H * 4 / 100 )) # 440 -> 17 | |
| 170 | + | ||
| 171 | + | # Baseline clamp (prevents top clipping) | |
| 172 | + | MIN_Y1=$(( H * 5 / 100 )) # 440 -> 30 | |
| 173 | + | [ "$MIN_Y1" -lt 18 ] && MIN_Y1=18 | |
| 174 | + | ||
| 175 | + | # ---- Barcode (Aztec) ---- | |
| 176 | + | jq -r '.barcode.message' "$PASS_JSON" | iconv -f UTF-8 -t ISO-8859-1 > "$MSG_FILE" | |
| 177 | + | zint --barcode=92 --scale=5 --border=1 -o "$BARCODE_RAW" -i "$MSG_FILE" # [1] | |
| 178 | + | ||
| 179 | + | magick "$BARCODE_RAW" \ | |
| 180 | + | -resize "${BC_SIZE}x${BC_SIZE}" \ | |
| 181 | + | -background white -gravity south -splice 0x$((H*5/100)) \ | |
| 182 | + | -fill black -font "$font" -pointsize $((H*3/100)) \ | |
| 183 | + | -annotate +0+0 "$alt_text" \ | |
| 184 | + | -bordercolor white -border $((W*3/100)) \ | |
| 185 | + | "$BARCODE_CARD" # [1] | |
| 186 | + | ||
| 187 | + | BAR_H=$(magick identify -format '%h' "$BARCODE_CARD") # [1] | |
| 188 | + | TEXT_H=$(( H - BAR_H - BOTTOM_MARGIN - BAR_GAP )) # [1] | |
| 189 | + | ||
| 190 | + | # ---- Auto-fit point sizes ---- | |
| 191 | + | # Leave room for date on the right: reserve ~40% width for it | |
| 192 | + | org_pt=$(fit_pt "${logoText:-$org}" $((W - 2*M - (W*40/100))) "$org_max" "$font") # [1] | |
| 193 | + | date_pt=$(fit_pt "$date" $((W - 2*M)) "$date_max" "$font") # [1] | |
| 194 | + | event_pt=$(fit_pt "$event" $((W - 2*M)) "$event_max" "$font") # [1] | |
| 195 | + | ||
| 196 | + | loc_val_pt=$(fit_pt "$loc_value" "$COL_W" "$val_max" "$font") # [1] | |
| 197 | + | seat_val_pt=$(fit_pt "$seat_value" "$COL_W" "$val_max" "$font") # [1] | |
| 198 | + | price_val_pt=$(fit_pt "$price_value" $((W - 2*M)) "$val_max" "$font") # [1] | |
| 199 | + | ||
| 200 | + | # ---- Y positions ---- | |
| 201 | + | y1=$((TOP + (H*6/100))) # org/date baseline | |
| 202 | + | y2=$((y1 + gap1)) # event | |
| 203 | + | y3=$((y2 + gap2)) # secondary labels | |
| 204 | + | y4=$((y3 + gap3)) # secondary values | |
| 205 | + | y5=$((y4 + gap4)) # price label | |
| 206 | + | y6=$((y5 + gap5)) # price value | |
| 207 | + | ||
| 208 | + | # Shift up if we collide with barcode reserved area (conservative) | |
| 209 | + | max_y=$((y6 + (H*7/100))) | |
| 210 | + | if [ "$max_y" -ge "$TEXT_H" ]; then | |
| 211 | + | shift=$((max_y - TEXT_H + (H*1/100))) | |
| 212 | + | y1=$((y1 - shift)) | |
| 213 | + | y2=$((y2 - shift)) | |
| 214 | + | y3=$((y3 - shift)) | |
| 215 | + | y4=$((y4 - shift)) | |
| 216 | + | y5=$((y5 - shift)) | |
| 217 | + | y6=$((y6 - shift)) | |
| 218 | + | fi | |
| 219 | + | ||
| 220 | + | # Clamp top baseline so first line doesn't clip | |
| 221 | + | if [ "$y1" -lt "$MIN_Y1" ]; then | |
| 222 | + | d=$((MIN_Y1 - y1)) | |
| 223 | + | y1=$((y1 + d)) | |
| 224 | + | y2=$((y2 + d)) | |
| 225 | + | y3=$((y3 + d)) | |
| 226 | + | y4=$((y4 + d)) | |
| 227 | + | y5=$((y5 + d)) | |
| 228 | + | y6=$((y6 + d)) | |
| 229 | + | fi | |
| 230 | + | ||
| 231 | + | # ---- Compose ---- | |
| 232 | + | magick "$BASE_IMG" \ | |
| 233 | + | -font "$font" \ | |
| 234 | + | \ | |
| 235 | + | -gravity northwest \ | |
| 236 | + | -fill "$fg" -pointsize "$org_pt" \ | |
| 237 | + | -annotate +$M+$y1 "${logoText:-$org}" \ | |
| 238 | + | \ | |
| 239 | + | -gravity northeast \ | |
| 240 | + | -fill "$fg" -pointsize "$date_pt" \ | |
| 241 | + | -annotate +$M+$y1 "$date" \ | |
| 242 | + | \ | |
| 243 | + | -gravity northwest \ | |
| 244 | + | -fill "$fg" -pointsize "$event_pt" \ | |
| 245 | + | -annotate +$M+$y2 "$event" \ | |
| 246 | + | \ | |
| 247 | + | -fill "$fg" -pointsize "$label_pt" \ | |
| 248 | + | -annotate +$M+$y3 "$loc_label" \ | |
| 249 | + | \ | |
| 250 | + | -gravity northeast \ | |
| 251 | + | -fill "$fg" -pointsize "$label_pt" \ | |
| 252 | + | -annotate +$M+$y3 "$seat_label" \ | |
| 253 | + | \ | |
| 254 | + | -gravity northwest \ | |
| 255 | + | -fill "$label" -pointsize "$loc_val_pt" \ | |
| 256 | + | -annotate +$M+$y4 "$loc_value" \ | |
| 257 | + | \ | |
| 258 | + | -gravity northeast \ | |
| 259 | + | -fill "$label" -pointsize "$seat_val_pt" \ | |
| 260 | + | -annotate +$M+$y4 "$seat_value" \ | |
| 261 | + | \ | |
| 262 | + | -gravity northwest \ | |
| 263 | + | -fill "$fg" -pointsize "$label_pt" \ | |
| 264 | + | -annotate +$M+$y5 "$price_label" \ | |
| 265 | + | \ | |
| 266 | + | -fill "$label" -pointsize "$price_val_pt" \ | |
| 267 | + | -annotate +$M+$y6 "$price_value" \ | |
| 268 | + | \ | |
| 269 | + | \( "$BARCODE_CARD" \) \ | |
| 270 | + | -gravity south -geometry +0+$BOTTOM_MARGIN -composite \ | |
| 271 | + | \ | |
| 272 | + | "$OUT" | |
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