// Copyright 2019 The Hugo Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package page

import (
	"html/template"
	"time"

	"github.com/gohugoio/hugo/common/maps"

	"github.com/gohugoio/hugo/config"

	"github.com/gohugoio/hugo/common/hugo"
	"github.com/gohugoio/hugo/langs"
	"github.com/gohugoio/hugo/navigation"
)

// Site represents a site in the build. This is currently a very narrow interface,
// but the actual implementation will be richer, see hugolib.SiteInfo.
type Site interface {
	Language() *langs.Language
	RegularPages() Pages
	Pages() Pages
	Home() Page
	IsServer() bool
	ServerPort() int
	Title() string
	Sites() Sites
	Current() Site
	Hugo() hugo.Info
	BaseURL() template.URL
	Taxonomies() any
	LastChange() time.Time
	Menus() navigation.Menus
	Params() maps.Params
	Data() map[string]any
}

// Sites represents an ordered list of sites (languages).
type Sites []Site

// First is a convenience method to get the first Site, i.e. the main language.
func (s Sites) First() Site {
	if len(s) == 0 {
		return nil
	}
	return s[0]
}

type testSite struct {
	h hugo.Info
	l *langs.Language
}

func (t testSite) Hugo() hugo.Info {
	return t.h
}

func (t testSite) ServerPort() int {
	return 1313
}

func (testSite) LastChange() (t time.Time) {
	return
}

func (t testSite) Title() string {
	return "foo"
}

func (t testSite) Sites() Sites {
	return nil
}

func (t testSite) Current() Site {
	return t
}

func (t testSite) IsServer() bool {
	return false
}

func (t testSite) Language() *langs.Language {
	return t.l
}

func (t testSite) Home() Page {
	return nil
}

func (t testSite) Pages() Pages {
	return nil
}

func (t testSite) RegularPages() Pages {
	return nil
}

func (t testSite) Menus() navigation.Menus {
	return nil
}

func (t testSite) Taxonomies() any {
	return nil
}

func (t testSite) BaseURL() template.URL {
	return ""
}

func (t testSite) Params() maps.Params {
	return nil
}

func (t testSite) Data() map[string]any {
	return nil
}

// NewDummyHugoSite creates a new minimal test site.
func NewDummyHugoSite(cfg config.Provider) Site {
	return testSite{
		h: hugo.NewInfo(hugo.EnvironmentProduction, nil),
		l: langs.NewLanguage("en", cfg),
	}
}