package platform

import (
	"encoding/json"
	"net/http"
	"strings"
)

func canvasIdempotencyKey(r *http.Request) string {
	return strings.ToLower(r.Header.Get("Idempotency-Key"))
}
func canvasExceededGraphLimits(raw json.RawMessage) bool {
	var doc struct {
		Nodes []json.RawMessage `json:"nodes"`
		Edges []json.RawMessage `json:"edges"`
	}
	if json.Unmarshal(raw, &doc) != nil {
		return false
	}
	if len(doc.Nodes) > 500 || len(doc.Edges) > 2000 {
		return true
	}
	for _, raw := range doc.Edges {
		var edge struct {
			Data struct {
				Path struct {
					Knots []json.RawMessage `json:"knots"`
				} `json:"path"`
			} `json:"data"`
		}
		if json.Unmarshal(raw, &edge) == nil && len(edge.Data.Path.Knots) > 64 {
			return true
		}
	}
	return false
}