Initial commit: Luminary AI Gateway

OpenAI-compatible AI gateway with Vue admin UI, multi-provider egress,
ingress key governance, monitoring, and security controls.

Co-authored-by: Cursor <cursoragent@cursor.com>

internal/prediction/params.go

@@ -0,0 +1,122 @@
+package prediction
+
+import (
+	"fmt"
+
+	"github.com/rose_cat707/luminary/internal/model"
+)
+
+type ParamType string
+
+const (
+	ParamString ParamType = "string"
+	ParamInt    ParamType = "int"
+	ParamFloat  ParamType = "float"
+)
+
+type ParamDef struct {
+	Name     string    `json:"name"`
+	Label    string    `json:"label"`
+	Type     ParamType `json:"type"`
+	Required bool      `json:"required"`
+	Default  any       `json:"default,omitempty"`
+}
+
+var Txt2ImgParams = []ParamDef{
+	{Name: "prompt", Label: "正向提示词", Type: ParamString, Required: true},
+	{Name: "negative_prompt", Label: "负向提示词", Type: ParamString, Default: ""},
+	{Name: "seed", Label: "随机种子", Type: ParamInt, Default: -1},
+	{Name: "width", Label: "宽度", Type: ParamInt, Default: 1024},
+	{Name: "height", Label: "高度", Type: ParamInt, Default: 1024},
+	{Name: "steps", Label: "采样步数", Type: ParamInt, Default: 20},
+	{Name: "cfg_scale", Label: "CFG", Type: ParamFloat, Default: 7.0},
+}
+
+var Img2ImgParams = []ParamDef{
+	{Name: "prompt", Label: "正向提示词", Type: ParamString, Required: true},
+	{Name: "negative_prompt", Label: "负向提示词", Type: ParamString, Default: ""},
+	{Name: "image", Label: "输入图 URL", Type: ParamString, Required: true},
+	{Name: "seed", Label: "随机种子", Type: ParamInt, Default: -1},
+	{Name: "steps", Label: "采样步数", Type: ParamInt, Default: 20},
+	{Name: "cfg_scale", Label: "CFG", Type: ParamFloat, Default: 7.0},
+	{Name: "denoise", Label: "重绘幅度", Type: ParamFloat, Default: 0.75},
+}
+
+func ParamsForWorkflowType(wt model.WorkflowType) []ParamDef {
+	switch wt {
+	case model.WorkflowImg2Img:
+		return Img2ImgParams
+	default:
+		return Txt2ImgParams
+	}
+}
+
+func RequiredBindings(wt model.WorkflowType) []string {
+	switch wt {
+	case model.WorkflowImg2Img:
+		return []string{"prompt", "image"}
+	default:
+		return []string{"prompt"}
+	}
+}
+
+func ValidateInput(wt model.WorkflowType, input map[string]any) (map[string]any, error) {
+	defs := ParamsForWorkflowType(wt)
+	out := make(map[string]any, len(defs))
+	for _, d := range defs {
+		v, ok := input[d.Name]
+		if !ok || v == nil {
+			if d.Required {
+				return nil, fmt.Errorf("missing required field: %s", d.Name)
+			}
+			if d.Default != nil {
+				out[d.Name] = d.Default
+			}
+			continue
+		}
+		coerced, err := coerceValue(d, v)
+		if err != nil {
+			return nil, fmt.Errorf("%s: %w", d.Name, err)
+		}
+		out[d.Name] = coerced
+	}
+	return out, nil
+}
+
+func coerceValue(d ParamDef, v any) (any, error) {
+	switch d.Type {
+	case ParamString:
+		s, ok := v.(string)
+		if !ok {
+			return nil, fmt.Errorf("expected string")
+		}
+		if d.Required && s == "" {
+			return nil, fmt.Errorf("cannot be empty")
+		}
+		return s, nil
+	case ParamInt:
+		switch n := v.(type) {
+		case float64:
+			return int(n), nil
+		case int:
+			return n, nil
+		case int64:
+			return int(n), nil
+		default:
+			return nil, fmt.Errorf("expected integer")
+		}
+	case ParamFloat:
+		switch n := v.(type) {
+		case float64:
+			return n, nil
+		case int:
+			return float64(n), nil
+		case int64:
+			return float64(n), nil
+		default:
+			return nil, fmt.Errorf("expected number")
+		}
+	default:
+		return v, nil
+	}
+}