lots of stuff

.local/bin/backup.sh

@@ -0,0 +1,86 @@
+#!/bin/sh
+
+# === Config ===
+BACKUP_NAME="$(hostname)_backup"
+BACKUP_SRC="$HOME/docs $HOME/pics $HOME/code $HOME/dls"
+PASSWORD_ENTRY="misc/backup-archive-password"
+
+# Known external backup drives (UUID-based mount points)
+BACKUP_DRIVE_PATHS=(
+  "/run/media/opal/e1f36c5c-4775-4549-8edc-1fa4d273b82e"
+  "/run/media/opal/790e21c0-77d3-4119-ad86-e9a6857fc89d"
+)
+
+# === Find first mounted backup drive ===
+for path in "${BACKUP_DRIVE_PATHS[@]}"; do
+  if [ -d "$path" ] && mountpoint -q "$path"; then
+    DRIVE_ROOT="$path"
+    break
+  fi
+done
+
+if [ -z "$DRIVE_ROOT" ]; then
+  echo "❌ No backup drive found."
+  exit 1
+fi
+
+# === Create backup directory on drive ===
+BACKUP_TARGET_DIR="$DRIVE_ROOT/backups/desktop_backups"
+mkdir -p "$BACKUP_TARGET_DIR"
+
+# === Create archive directly on the drive ===
+TODAY=$(date +%F)
+ARCHIVE="$BACKUP_TARGET_DIR/${BACKUP_NAME}_${TODAY}.7z"
+
+PASSWORD=$(gopass show "$PASSWORD_ENTRY")
+if [ -z "$PASSWORD" ]; then
+  echo "❌ Failed to get password from gopass"
+  exit 1
+fi
+
+echo "📦 Creating archive directly at $ARCHIVE..."
+7z a -mhe=on -p"$PASSWORD" "$ARCHIVE" $BACKUP_SRC
+if [ $? -ne 0 ]; then
+  echo "❌ 7z compression failed"
+  exit 1
+fi
+
+# === Retention policy ===
+echo "🧹 Applying retention policy..."
+
+BASE="${BACKUP_NAME}_"
+find "$BACKUP_TARGET_DIR" -maxdepth 1 -name "${BASE}*.7z" | while read -r file; do
+  fname=$(basename "$file")
+  date_part=$(echo "$fname" | sed -E "s/^${BASE}([0-9]{4}-[0-9]{2}-[0-9]{2})\.7z$/\1/")
+
+  if ! date -d "$date_part" >/dev/null 2>&1; then
+    echo "⚠️  Skipping unrecognized file: $fname"
+    continue
+  fi
+
+  day_of_week=$(date -d "$date_part" +%u)     # 7 = Sunday
+  day_of_month=$(date -d "$date_part" +%d)    # 01 = first of month
+  month_day=$(date -d "$date_part" +%m-%d)    # 01-01 = Jan 1
+  age_days=$(( ( $(date +%s) - $(date -d "$date_part" +%s) ) / 86400 ))
+
+  keep=0
+
+  if [ "$month_day" = "01-01" ]; then
+    keep=1  # yearly
+  elif [ "$day_of_month" = "01" ] && [ "$age_days" -le 180 ]; then
+    keep=1  # monthly
+  elif [ "$day_of_week" = "7" ] && [ "$age_days" -le 28 ]; then
+    keep=1  # weekly
+  elif [ "$age_days" -le 3 ]; then
+    keep=1  # daily
+  fi
+
+  if [ "$keep" -eq 1 ]; then
+    echo "📌 Keeping: $fname"
+  else
+    echo "🗑 Deleting: $fname"
+    rm -f "$file"
+  fi
+done
+
+echo "✅ Backup complete."