package urls

import (
	"fmt"
	"net/url"
)

func linkTo(name, base string, path ...string) (*url.URL, error) {
	u, err := url.JoinPath(base, path...)
	if err != nil {
		return nil, fmt.Errorf("could not build %s url: %w", name, err)
	}
	u, err = url.PathUnescape(u)
	if err != nil {
		return nil, fmt.Errorf("could not unescape %s url: %w", name, err)
	}
	uri, err := url.Parse(u)
	if err != nil {
		return nil, fmt.Errorf("could not parse %s url: %w", name, err)
	}
	return uri, err
}

func UrlInbox(name, domain string) (*url.URL, error) {
	return linkTo("inbox", domain, "actors", name, "inbox")
}

func UrlOutbox(name, domain string) (*url.URL, error) {
	return linkTo("outbox", domain, "actors", name, "outbox")
}

func UrlActor(name, domain string) (*url.URL, error) {
	return linkTo("outbox", domain, "actors", name)
}

func UrlActorKey(name, domain string) (*url.URL, error) {
	return linkTo("outbox", domain, "actors", name+"#key")
}

func UrlActorAvatar(name, domain string) (*url.URL, error) {
	return linkTo("outbox", domain, "actors", name, "avatar")
}

func UrlFollowers(name, domain string) (*url.URL, error) {
	return linkTo("outbox", domain, "actors", name, "followers")
}

func UrlFollowing(name, domain string) (*url.URL, error) {
	return linkTo("outbox", domain, "actors", name, "following")
}

func UrlActivity(name, domain, id string) (*url.URL, error) {
	return linkTo("activity", domain, "actors", name, "activity", id)
}

func UrlNote(name, domain, id string) (*url.URL, error) {
	return linkTo("note", domain, "actors", name, "activity", id, "note")
}