//go:build js

//go:generate go run gensearchtypes.go -out zsearch.go

/*
Copyright 2016 The Perkeep Authors.

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.
*/

// This package contains source code for gopherjs, to generate javascript code
// that is included in the publisher web UI.
package main

import (
	"fmt"
	"strings"

	"perkeep.org/pkg/blob"

	"github.com/gopherjs/gopherjs/js"
	"github.com/gopherjs/jquery"
)

var jQuery = jquery.NewJQuery

func main() {
	//show jQuery Version on console:
	print("Your current jQuery version is: " + jQuery().Jquery)

	js.Global.Set("RenderMembers", RenderMembers)
	js.Global.Set("RenderFile", StartRenderFile)
}

func host() (string, error) {
	h := js.Global.Get("host")
	if undefOrEmptyString(h) {
		return "", fmt.Errorf("No Host in header")
	}
	return h.String(), nil
}

func scheme() (string, error) {
	// We can't rely on the publisher's server-side to set the scheme as a var,
	// because it could be behind a proxy, serving for a scheme different
	// from the one we're seeing from the outside.
	// Ask the browser instead what scheme/protocol the current page was accessed with.
	proto := js.Global.Get("location").Get("protocol")
	if undefOrEmptyString(proto) {
		return "", fmt.Errorf("window.location.protocol missing or invalid")
	}
	return strings.TrimRight(proto.String(), ":"), nil
}

func subjectBasePath() (string, error) {
	basePath := js.Global.Get("subjectBasePath")
	if undefOrEmptyString(basePath) {
		return "", fmt.Errorf("No SubjectBasePath in header")
	}
	return basePath.String(), nil
}

func subject() (blob.Ref, error) {
	o := js.Global.Get("subject")
	if undefOrEmptyString(o) {
		return blob.Ref{}, fmt.Errorf("No Subject in header")
	}
	sbj := o.String()
	br, ok := blob.Parse(sbj)
	if !ok {
		return blob.Ref{}, fmt.Errorf("invalid blobref %q", sbj)
	}
	return br, nil
}

func publishedRoot() (blob.Ref, error) {
	o := js.Global.Get("publishedRoot")
	if undefOrEmptyString(o) {
		return blob.Ref{}, fmt.Errorf("No PublishedRoot in header")
	}
	root := o.String()
	br, ok := blob.Parse(root)
	if !ok {
		return blob.Ref{}, fmt.Errorf("invalid blobref %q", root)
	}
	return br, nil
}

func pathPrefix() (string, error) {
	prefix := js.Global.Get("pathPrefix")
	if undefOrEmptyString(prefix) {
		return "", fmt.Errorf("No PathPrefix in header")
	}
	return prefix.String(), nil
}

func undefOrEmptyString(o *js.Object) bool {
	return o == js.Undefined || o.String() == ""
}