package signplatform

import (
	"fmt"

	"hyapi-server/internal/domains/certification/enums"
	"hyapi-server/internal/domains/certification/ports"
)

type Registry struct {
	providers map[enums.SignPlatform]ports.SignPlatformProvider
	order     []enums.SignPlatform
}

func NewRegistry(providers ...ports.SignPlatformProvider) *Registry {
	r := &Registry{
		providers: make(map[enums.SignPlatform]ports.SignPlatformProvider, len(providers)),
		order:     make([]enums.SignPlatform, 0, len(providers)),
	}
	for _, p := range providers {
		if p == nil {
			continue
		}
		platform := p.Platform()
		r.providers[platform] = p
		r.order = append(r.order, platform)
	}
	return r
}

func (r *Registry) Get(platform enums.SignPlatform) (ports.SignPlatformProvider, error) {
	if platform == "" {
		platform = enums.DefaultSignPlatform()
	}
	p, ok := r.providers[platform]
	if !ok {
		return nil, fmt.Errorf("不支持的签署平台: %s", platform)
	}
	return p, nil
}

func (r *Registry) List() []ports.SignPlatformProvider {
	out := make([]ports.SignPlatformProvider, 0, len(r.order))
	for _, platform := range r.order {
		if p, ok := r.providers[platform]; ok {
			out = append(out, p)
		}
	}
	return out
}

var _ ports.SignPlatformRegistry = (*Registry)(nil)