package api

import (
	"encoding/json"

	"git.ipao.vip/rogee/creator-hub/internal/creator"
	hub "git.ipao.vip/rogee/creator-hub/internal/environment"
	"github.com/gofiber/fiber/v3"
)

// Existing fingerprint endpoints use a flat fingerprint object. Memory-only
// requests must not replace an omitted fingerprint with its zero value.
func decodeEnvironmentSettings(c fiber.Ctx) (*hub.Fingerprint, *int, error) {
	var input struct {
		hub.Fingerprint
		MemoryLimitMB *int `json:"memory_limit_mb"`
	}
	if err := decodeCreator(c, &input); err != nil {
		return nil, nil, err
	}
	var fields map[string]json.RawMessage
	if err := json.Unmarshal(c.Body(), &fields); err != nil {
		return nil, nil, creator.ErrInvalid
	}
	if value, present := fields["memory_limit_mb"]; present && string(value) == "null" {
		return nil, nil, creator.ErrInvalid
	}
	delete(fields, "memory_limit_mb")
	if len(fields) == 0 && input.MemoryLimitMB != nil {
		return nil, input.MemoryLimitMB, nil
	}
	return &input.Fingerprint, input.MemoryLimitMB, nil
}