Split config module concerns for task 9m0

1 files changed, 237 insertions, 0 deletions

diff --git a/src/lib/config.validate.source.sh b/src/lib/config.validate.source.sh
new file mode 100644
index 0000000..373f05d
--- /dev/null
+++ b/src/lib/config.validate.source.sh
@@ -0,0 +1,237 @@
+config_error() {
+    local -r message="$1"; shift
+
+    printf 'ERROR: %s\n' "$message" >&2
+    return 1
+}
+
+require_config_var() {
+    local -r name="$1"; shift
+
+    if [ -z "${!name+x}" ] || [ -z "${!name}" ]; then
+        config_error "$name must be set in shuriken configuration"
+    fi
+}
+
+validate_positive_integer_config_var() {
+    local -r name="$1"; shift
+    local -r value="${!name}"
+
+    if [[ ! "$value" =~ ^[0-9]+$ ]] || (( value < 1 )); then
+        config_error "$name must be a positive integer"
+    fi
+}
+
+validate_optional_positive_integer_config_var() {
+    local -r name="$1"; shift
+
+    if [ -n "${!name}" ]; then
+        validate_positive_integer_config_var "$name"
+    fi
+}
+
+validate_yes_no_config_var() {
+    local -r name="$1"; shift
+    local -r value="${!name}"
+
+    case "$value" in
+        yes|no)
+            ;;
+        *)
+            config_error "$name must be yes or no"
+            ;;
+    esac
+}
+
+validate_dist_dir() {
+    local existing_parent
+
+    if [ -e "$DIST_DIR" ]; then
+        if [ ! -d "$DIST_DIR" ]; then
+            config_error "DIST_DIR $DIST_DIR must be a directory"
+        fi
+        if [[ ! -w "$DIST_DIR" || ! -x "$DIST_DIR" ]]; then
+            config_error "DIST_DIR $DIST_DIR must be writable"
+        fi
+
+        return
+    fi
+
+    existing_parent=$(existing_parent_dir "$DIST_DIR")
+
+    if [ ! -d "$existing_parent" ]; then
+        config_error "DIST_DIR parent $existing_parent must be a directory"
+    fi
+    if [[ ! -w "$existing_parent" || ! -x "$existing_parent" ]]; then
+        config_error "DIST_DIR parent $existing_parent must be writable"
+    fi
+}
+
+validate_template_dir_access() {
+    if [[ ! -d "$TEMPLATE_DIR" || ! -r "$TEMPLATE_DIR" \
+        || ! -x "$TEMPLATE_DIR" ]]; then
+        config_error "TEMPLATE_DIR $TEMPLATE_DIR must be a readable directory"
+    fi
+}
+
+validate_template_file() {
+    local -r template_name="$1"; shift
+
+    if [ ! -r "$TEMPLATE_DIR/$template_name.tmpl" ]; then
+        config_error \
+            "template file $TEMPLATE_DIR/$template_name.tmpl must be readable"
+    fi
+}
+
+validate_template_dir() {
+    local template_name
+    local -a required_templates=(
+        details
+        footer
+        header
+        next
+        prev
+        preview
+        redirect
+        view
+    )
+
+    validate_template_dir_access
+
+    if [ "${SPLASH_PAGE:-yes}" = yes ]; then
+        required_templates+=(splash)
+    fi
+
+    for template_name in "${required_templates[@]}"; do
+        validate_template_file "$template_name"
+    done
+}
+
+validate_refresh_splash_config() {
+    local required_var
+    local -a required_vars=(
+        TITLE
+        DIST_DIR
+        TEMPLATE_DIR
+    )
+
+    for required_var in "${required_vars[@]}"; do
+        require_config_var "$required_var"
+    done
+
+    validate_yes_no_config_var SPLASH_PAGE
+
+    if [ "${SPLASH_PAGE:-yes}" != yes ]; then
+        config_error 'SPLASH_PAGE must be yes to refresh the splash page'
+    fi
+
+    validate_dist_dir
+
+    validate_template_dir_access
+    validate_template_file splash
+
+    if [ ! -d "$DIST_DIR/photos" ]; then
+        config_error "DIST_DIR photos directory $DIST_DIR/photos must exist"
+    fi
+
+    if [ ! -d "$DIST_DIR/blurs" ]; then
+        config_error "DIST_DIR blurs directory $DIST_DIR/blurs must exist"
+    fi
+}
+
+validate_imagemagick() {
+    if command -v magick >/dev/null 2>&1; then
+        return
+    fi
+    if command -v convert >/dev/null 2>&1; then
+        return
+    fi
+
+    config_error 'ImageMagick is required; install magick or convert'
+}
+
+validate_common_config() {
+    local required_var
+    local -a required_vars=(
+        TITLE
+        THUMBHEIGHT
+        MAXPREVIEWS
+        IMAGE_JOBS
+        INCOMING_DIR
+        DIST_DIR
+        TEMPLATE_DIR
+    )
+
+    for required_var in "${required_vars[@]}"; do
+        require_config_var "$required_var"
+    done
+
+    validate_optional_positive_integer_config_var HEIGHT
+    validate_positive_integer_config_var THUMBHEIGHT
+    validate_positive_integer_config_var MAXPREVIEWS
+    validate_positive_integer_config_var IMAGE_JOBS
+    validate_positive_integer_config_var IMAGEMAGICK_TIMEOUT
+    validate_positive_integer_config_var TAR_TIMEOUT
+    validate_yes_no_config_var SHUFFLE
+    validate_yes_no_config_var SPLASH_PAGE
+    validate_yes_no_config_var TARBALL_INCLUDE
+}
+
+validate_generation_config() {
+    local -r require_imagemagick="${1:-yes}"
+
+    validate_common_config
+
+    if [ ! -d "$INCOMING_DIR" ]; then
+        config_error "You have to create $INCOMING_DIR first"
+    fi
+    if [[ ! -r "$INCOMING_DIR" || ! -x "$INCOMING_DIR" ]]; then
+        config_error "INCOMING_DIR $INCOMING_DIR must be readable"
+    fi
+
+    validate_dist_dir
+    validate_template_dir
+    if [ "$require_imagemagick" = yes ]; then
+        validate_imagemagick
+    fi
+}
+
+validate_print_config() {
+    local -a tar_opts=()
+    local -a sync_destinations=()
+
+    validate_common_config
+    resolve_tar_opts tar_opts
+    resolve_sync_destinations sync_destinations
+    validate_yes_no_config_var SYNC_DELETE
+}
+
+validate_sync_destinations() {
+    local -a sync_destinations=()
+
+    resolve_sync_destinations sync_destinations
+
+    if (( ${#sync_destinations[@]} == 0 )); then
+        config_error 'SYNC_DESTINATIONS must contain at least one destination'
+    fi
+}
+
+validate_rsync() {
+    if command -v rsync >/dev/null 2>&1; then
+        return
+    fi
+
+    config_error 'rsync is required to sync generated output'
+}
+
+validate_sync_config() {
+    require_config_var DIST_DIR
+    validate_yes_no_config_var SYNC_DELETE
+    validate_sync_destinations
+
+    if [[ ! -d "$DIST_DIR" || ! -r "$DIST_DIR" || ! -x "$DIST_DIR" ]]; then
+        config_error "DIST_DIR $DIST_DIR must be a readable directory"
+    fi
+
+    validate_rsync
+}