move validations to value types

Also fix date and date-time validation

pkg/generators/models/models_test.go

@@ -118,20 +118,20 @@ var cases = []struct {
 		directory: "testdata/cases/parameter_model",
 	},
 	{
-		name:      "model with recursive definition within an allof",
+		name:      "model with recursive definition within an allOf",
 		directory: "testdata/cases/allof_self_reference",
 	},
 	{
-		name:      "allof merges required list",
+		name:      "allOf merges required list",
 		directory: "testdata/cases/allof_merges_required_list",
 	},
 	// 25
 	{
-		name:      "allof merges enum list",
+		name:      "allOf merges enum list",
 		directory: "testdata/cases/allof_enum",
 	},
 	{
-		name:      "allof supports intermediate array types",
+		name:      "allOf supports intermediate array types",
 		directory: "testdata/cases/allof_arrays",
 	},
 	{

pkg/generators/models/templates/model.gotpl

@@ -12,9 +12,10 @@ import (
 	{{- end}}
 
 	validation "github.com/go-ozzo/ozzo-validation/v4"
-{{- range .Imports}}
-	"{{.}}"
-{{ end}}
+
+{{- range $package, $alias := .Imports}}
+	{{$alias}} "{{$package}}"
+{{- end}}
 )
 
 {{- $modelName := .Name }}

pkg/generators/models/templates/value.gotpl

@@ -6,5 +6,50 @@
 //	Version: {{.SpecVersion}}
 package {{ .PackageName }}
 
+{{- if .Imports}}
+import (
+	{{- range $package, $alias := .Imports}}
+	{{$alias}} "{{$package}}"
+	{{- end}}
+)
+{{- end}}
+
+{{- if .PatternErrorMsg}}
+	// {{.Name}}PatternError is the error message returned for pattern validation errors on {{.Name}}
+	var {{.Name}}PatternError = validation.NewError("validation_{{.Name }}_pattern_invalid", "{{.PatternErrorMsg}}")
+{{- end }}
+{{- if .Pattern }}
+// {{.Name| firstLower}}Pattern is the validation regexp for {{.Name}}
+var {{.Name| firstLower}}Pattern = regexp.MustCompile(`{{ .Pattern }}`)
+{{ end }}
+
 {{ (printf "%s is a value type. %s" .Name .Description) | commentBlock }}
 type {{.Name}} {{.GoType}}
+
+
+// Validate implements basic validation for this model
+func (v {{.Name}}) Validate() error {
+{{- if .NeedsValidation }}
+	return validation.Validate(
+	{{.GoType}}(v),
+		{{- if .HasMin }}validation.Min({{ .GoType }}({{ .Min }})),{{ end }}
+		{{- if .HasMax }}validation.Max({{ .GoType }}({{ .Max }})),{{ end }}
+		{{- if or .HasMinLength .HasMaxLength }}validation.Length({{ .MinLength }},{{ .MaxLength }}),{{ end }}
+		{{- if .IsDate }}validation.Date("2006-01-02"),{{ end }}
+		{{- if .IsDateTime }}validation.Date(time.RFC3339),{{ end }}
+		{{- if .IsBase64 }}is.Base64,{{ end }}
+		{{- if .IsEmail }}is.EmailFormat,{{ end }}
+		{{- if .IsUUID }}is.UUID,{{ end }}
+		{{- if .IsURL }}is.URL.Error("must be a valid URL with HTTP or HTTPS scheme"),{{ end }}
+		{{- if .IsURI }}is.RequestURI,{{ end }}
+		{{- if .IsRequestURI }}is.RequestURL.Error("must be valid URI with scheme"),{{ end }}
+		{{- if .IsHostname }}is.Host,{{ end }}
+		{{- if .IsIPv4 }}is.IPv4,{{ end }}
+		{{- if .IsIPv6 }}is.IPv6,{{ end }}
+		{{- if .IsIP }}is.IP,{{ end }}
+		{{- if .Pattern }}validation.Match({{.Name| firstLower}}Pattern){{if .PatternErrorMsg}}.ErrorObject({{.Name}}PatternError){{end}},{{ end }}
+	)
+{{- else }}
+	return nil
+{{- end }}
+}

pkg/generators/models/testdata/cases/validation/api.yaml

@@ -14,9 +14,7 @@ components:
         - cron
       properties:
         cron:
-          type: string
-          pattern: (@(annually|yearly|monthly|weekly|daily|hourly|reboot))|(@every (\d+(ns|us|µs|ms|s|m|h))+)|((((\d+,)+\d+|(\d+(\/|-)\d+)|\d+|\*) ?){5,7})
-          x-pattern-error: "must be a valid cron value"
+          $ref: "#/components/schemas/Cron"
         pomodoro:
           type: string
           pattern: "^\\d{1,2}m$"
@@ -43,7 +41,7 @@ components:
           minLength: 1
         email:
           type: string
-          format: email
+          format: "email"
         date:
           type: string
           format: "date"
@@ -53,9 +51,6 @@ components:
         base64:
           type: string
           format: "byte"
-        email:
-          type: string
-          format: "email"
         uuid:
           type: string
           format: "uuid"
@@ -80,6 +75,10 @@ components:
         ip:
           type: string
           format: "ip"
+    Cron:
+      type: string
+      pattern: (@(annually|yearly|monthly|weekly|daily|hourly|reboot))|(@every (\d+(ns|us|µs|ms|s|m|h))+)|((((\d+,)+\d+|(\d+(\/|-)\d+)|\d+|\*) ?){5,7})
+      x-pattern-error: "must be a valid cron value"
     Gender:
       type: string
       enum: