#!/bin/bash
# this file generates Go source code for the gowiki
# it contains html and css and uses the contents
# of the templates directory

templates_go="templates.go"
echo "Generating templates.go"

if [ ! -d templates ]; then
  echo "error: templates directory not found" 1>&2
  exit 2
fi

cat << EOF > ${templates_go}
// This file is auto-generated by build/templates.sh
// using the contents of the templates directory

package main

import (
	"errors"
	"html/template"
)

EOF

echo "const (" >> ${templates_go}

for f in $(ls templates/*.html); do
  fname=${f/templates\//}
  fname=${fname/.html/}
  echo "	${fname} = \`$(cat ${f})\`" >> ${templates_go}
done

for f in $(ls templates/*.css); do
  fname=${f/templates\//}
  fname=${fname/.css/CSS}
  echo "	${fname} = \`$(cat ${f})\`" >> ${templates_go}
done

cat << EOF >> ${templates_go}
)

var (
	templ  map[string]*template.Template
	res    map[string][]byte
)

func loadTemplates() {
	var errf bool
	templ = make(map[string]*template.Template)
	res = make(map[string][]byte)
	parse := func(html ...string) (temp *template.Template) {
		var err error
		temp = template.New("")
		for _, s := range html {
			temp, err = temp.Parse(s)
			if err != nil {
				log.Println("parse:", err)
				errf = true
				return
			}
		}
		return
	}

	// resources
	res["bootstrap.css"] = []byte(bootstrapCSS)
	res["custom.css"] = []byte(customCSS)

	// pages.go
	templ["notFoundHandler"] = parse(index, menu, notFound)
	templ["loginHandler"] = parse(index, menu, login)
	templ["searchHandler"] = parse(index, menu, search)
	templ["allHandler"] = parse(index, menu, all)
	templ["wikiNewHandler"] = parse(index, menu, wikiNew)
	templ["wikiEditHandler"] = parse(index, menu, wikiEdit)
	templ["wikiHandler"] = parse(index, menu, wiki)
	templ["wikiMDHandler"] = parse(index, menu, wikiMD)
	// users.go
	templ["usersHandler"] = parse(index, menu, users)
	templ["userNewHandler"] = parse(index, menu, userNew)
	templ["userEditHandler"] = parse(index, menu, userEdit)
	templ["userDelHandler"] = parse(index, menu, userDel)

	if errf {
		log.Fatal("parse: ", errors.New("parsing templates failed"))
	}
}
EOF