refactored for maintainability

internal/validation/querys.go

@@ -0,0 +1,70 @@
+package validation
+
+import (
+	"net/http"
+
+	"git.haelnorr.com/h/golib/hws"
+	"git.haelnorr.com/h/timefmt"
+)
+
+// QueryGetter wraps http.Request to get query values
+type QueryGetter struct {
+	r      *http.Request
+	checks []*ValidationRule
+}
+
+func NewQueryGetter(r *http.Request) *QueryGetter {
+	return &QueryGetter{r: r, checks: []*ValidationRule{}}
+}
+
+func (q *QueryGetter) Get(key string) string {
+	return q.r.URL.Query().Get(key)
+}
+
+func (q *QueryGetter) getChecks() []*ValidationRule {
+	return q.checks
+}
+
+func (q *QueryGetter) AddCheck(check *ValidationRule) {
+	q.checks = append(q.checks, check)
+}
+
+func (q *QueryGetter) ValidateChecks() []*ValidationRule {
+	return validate(q)
+}
+
+func (q *QueryGetter) String(key string) *StringField {
+	return newStringField(key, q)
+}
+
+func (q *QueryGetter) Int(key string) *IntField {
+	return newIntField(key, q)
+}
+
+func (q *QueryGetter) Time(key string, format *timefmt.Format) *TimeField {
+	return newTimeField(key, format, q)
+}
+
+func (q *QueryGetter) Validate() bool {
+	return len(validate(q)) == 0
+}
+
+// ValidateAndNotify runs the provided validation checks and sends a notification for each failed check
+// Returns true if all checks passed
+func (q *QueryGetter) ValidateAndNotify(
+	s *hws.Server,
+	w http.ResponseWriter,
+	r *http.Request,
+) bool {
+	return validateAndNotify(s, w, r, q)
+}
+
+// ValidateAndError runs the provided validation checks and renders an error page with all the error messages
+// Returns true if all checks passed
+func (q *QueryGetter) ValidateAndError(
+	s *hws.Server,
+	w http.ResponseWriter,
+	r *http.Request,
+) bool {
+	return validateAndError(s, w, r, q)
+}