package main

import (
	"encoding/xml"
	"fmt"
	"os"
)

type OpenSearchDescription struct {
	XMLName        xml.Name `xml:"OpenSearchDescription"`
	Xmlns          string   `xml:"xmlns,attr"`
	ShortName      string   `xml:"ShortName"`
	LongName       string   `xml:"LongName"`
	Description    string   `xml:"Description"`
	Tags           string   `xml:"Tags,omitempty"`
	InputEncoding  string   `xml:"InputEncoding"`
	OutputEncoding string   `xml:"OutputEncoding"`
	Image          *Image   `xml:"Image,omitempty"`
	URLs           []URL    `xml:"Url"`
}

type URL struct {
	Type     string `xml:"type,attr"`
	Method   string `xml:"method,attr,omitempty"`
	Template string `xml:"template,attr"`
}

type Image struct {
	Height int    `xml:"height,attr"`
	Width  int    `xml:"width,attr"`
	Type   string `xml:"type,attr"`
	URL    string `xml:",chardata"`
}

func generateOpenSearchXML(config Config) {
	baseURL := addProtocol(config.Domain)

	opensearch := OpenSearchDescription{
		Xmlns:          "http://a9.com/-/spec/opensearch/1.1/",
		ShortName:      Translate("site_name"),
		LongName:       Translate("site_name") + " Search",
		Description:    Translate("site_description"),
		Tags:           Translate("site_tags"),
		InputEncoding:  "UTF-8",
		OutputEncoding: "UTF-8",
		Image: &Image{
			Height: 16,
			Width:  16,
			Type:   "image/x-icon",
			URL:    fmt.Sprintf("%s/favicon.ico", baseURL),
		},
		URLs: []URL{
			{
				Type:     "text/html",
				Method:   "get",
				Template: fmt.Sprintf("%s/search?q={searchTerms}", baseURL),
			},
			{
				Type:     "application/x-suggestions+json",
				Template: fmt.Sprintf("%s/suggestions?q={searchTerms}", baseURL),
			},
		},
	}

	file, err := os.Create("static/opensearch.xml")
	if err != nil {
		printErr("Error creating OpenSearch file: %v", err)
		return
	}
	defer file.Close()

	file.WriteString(`<?xml version="1.0" encoding="UTF-8"?>` + "\n")

	enc := xml.NewEncoder(file)
	enc.Indent("  ", "    ")
	if err := enc.Encode(opensearch); err != nil {
		printErr("Error encoding OpenSearch XML: %v", err)
		return
	}

	printInfo("OpenSearch description file generated successfully.")
}