Fix this-week-in-past upgrade database migration

apps/this-week-in-past/2.3.2/scripts/upgrade.sh

@@ -1,2 +1,90 @@
 #!/usr/bin/env bash
 set -euo pipefail
+
+PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
+export PATH
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd -P)"
+ENV_FILE="${ENV_FILE:-$ROOT_DIR/.env}"
+
+fail() {
+  printf '%s\n' "$1" >&2
+  exit 1
+}
+
+read_env_value() {
+  local key="$1"
+  [[ -f "$ENV_FILE" ]] || return 0
+  local value
+  value="$(sed -n "s/^${key}=//p" "$ENV_FILE" | tail -n 1)"
+  case "$value" in
+    \"*\") value="${value#\"}"; value="${value%\"}" ;;
+    \'*\') value="${value#\'}"; value="${value%\'}" ;;
+  esac
+  printf '%s\n' "$value"
+}
+
+configured_value() {
+  local key="$1"
+  local default_value="$2"
+  local value
+  value="${!key:-}"
+  if [[ -z "$value" ]]; then
+    value="$(read_env_value "$key")"
+  fi
+  printf '%s\n' "${value:-$default_value}"
+}
+
+resolve_app_path() {
+  local key="$1"
+  local raw="$2"
+  local clean candidate resolved current part
+  local -a parts=()
+  case "$raw" in
+    ""|/*|.|..|../*|*/../*|*/..) echo "unsafe ${key} path" >&2; return 1 ;;
+  esac
+  if [[ "$raw" =~ [[:cntrl:]] ]]; then
+    echo "unsafe ${key} path" >&2
+    return 1
+  fi
+  clean="${raw#./}"
+  [[ -n "$clean" ]] || { echo "unsafe ${key} path" >&2; return 1; }
+  command -v realpath >/dev/null 2>&1 || { echo "realpath is required" >&2; return 1; }
+  candidate="$ROOT_DIR/$clean"
+  resolved="$(realpath -m -- "$candidate")" || { echo "unsafe ${key} path" >&2; return 1; }
+  case "$resolved" in
+    "$ROOT_DIR"/*) ;;
+    *) echo "unsafe ${key} path" >&2; return 1 ;;
+  esac
+  current="$ROOT_DIR"
+  IFS='/' read -r -a parts <<< "$clean"
+  for part in "${parts[@]}"; do
+    [[ -z "$part" || "$part" == "." ]] && continue
+    current="$current/$part"
+    if [[ -L "$current" ]]; then
+      echo "unsafe ${key} path" >&2
+      return 1
+    fi
+  done
+  printf '%s\n' "$resolved"
+}
+
+APP_DATA_DIR_VALUE="$(configured_value APP_DATA_DIR './data/app')"
+DATA_DIR="$(resolve_app_path APP_DATA_DIR "$APP_DATA_DIR_VALUE")"
+
+cd -- "$DATA_DIR" || fail "unable to access application data directory"
+[[ -f resources.db ]] || exit 0
+command -v sqlite3 >/dev/null 2>&1 || fail "sqlite3 is required to upgrade the application database"
+
+resource_table="$(sqlite3 -noheader resources.db "SELECT name FROM sqlite_master WHERE type='table' AND name='resources';")"
+[[ "$resource_table" == "resources" ]] || exit 0
+
+resource_columns="$(sqlite3 -noheader resources.db 'PRAGMA table_info(resources);')"
+if ! printf '%s\n' "$resource_columns" | awk -F'|' '$2 == "taken" { found=1 } END { exit(found ? 0 : 1) }'; then
+  sqlite3 resources.db <<'SQL'
+.timeout 30000
+BEGIN IMMEDIATE;
+ALTER TABLE resources ADD COLUMN taken TEXT;
+COMMIT;
+SQL
+fi