package main

import (
	"github.com/pstuifzand/microsub-server/microsub"
)

// NullBackend is the simplest possible backend
type NullBackend struct {
}

// ChannelsGetList gets no channels
func (b *NullBackend) ChannelsGetList() []microsub.Channel {
	return []microsub.Channel{
		microsub.Channel{"0000", "default"},
		microsub.Channel{"0001", "notifications"},
		microsub.Channel{"1000", "Friends"},
		microsub.Channel{"1001", "Family"},
	}
}

// ChannelsCreate creates no channels
func (b *NullBackend) ChannelsCreate(name string) microsub.Channel {
	return microsub.Channel{
		UID:  "1234",
		Name: name,
	}
}

// ChannelsUpdate updates no channels
func (b *NullBackend) ChannelsUpdate(uid, name string) microsub.Channel {
	return microsub.Channel{
		UID:  uid,
		Name: name,
	}
}

// ChannelsDelete delets no channels
func (b *NullBackend) ChannelsDelete(uid string) {
}

// TimelineGet gets no timeline
func (b *NullBackend) TimelineGet(after, before, channel string) microsub.Timeline {
	return microsub.Timeline{
		Paging: microsub.Pagination{},
		Items:  []map[string]interface{}{},
	}
}

func (b *NullBackend) FollowGetList(uid string) []microsub.Feed {
	return []microsub.Feed{}
}

func (b *NullBackend) FollowURL(uid string, url string) microsub.Feed {
	return microsub.Feed{"feed", url}
}

func (b *NullBackend) UnfollowURL(uid string, url string) {
}

func (b *NullBackend) Search(query string) []microsub.Feed {
	return []microsub.Feed{}
}

func (b *NullBackend) PreviewURL(url string) microsub.Timeline {
	return microsub.Timeline{
		Paging: microsub.Pagination{},
		Items:  []map[string]interface{}{},
	}
}