package render

import "gitoa.ru/go-4devs/mime"

type Option func(*Reference)

func WithParam(name string, val interface{}) Option {
	return func(r *Reference) {
		r.Params[name] = val
	}
}

func WithEngine(name string) Option {
	return func(r *Reference) {
		r.Engine = name
	}
}

func WithFormat(ext mime.Ext) Option {
	return func(r *Reference) {
		r.Format = ext
	}
}

func NewReference(name string, opts ...Option) Reference {
	ref := Reference{
		name: name,
	}

	for _, opt := range opts {
		opt(&ref)
	}

	return ref
}

type Reference struct {
	name   string
	Engine string
	Format mime.Ext
	Params Params
}

func (r Reference) Name() string {
	if !r.Format.Is(mime.ExtUnrecognized) {
		return r.name + "." + r.Format.String()
	}

	return r.name
}

func (r Reference) String() string {
	if r.Engine != "" {
		return r.name + "." + r.Format.String() + "." + r.Engine
	}

	return r.name + "." + r.Format.String()
}

func (r Reference) IsEngine(engines ...string) bool {
	for _, engine := range engines {
		if engine == r.Engine {
			return true
		}
	}

	return false
}

func (r Reference) IsFromat(formats ...mime.Ext) bool {
	return r.Format.Is(formats...)
}

type Params map[string]interface{}

func (p Params) Get(name string) interface{} {
	return p[name]
}