#!/bin/bash
# Copyright (C) 2017 Marius Schellenberger

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

templates_go="pkg/server/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}
// Copyright (C) 2017 Marius Schellenberger

// This file is auto-generated by build/templates.sh
// using the contents of the templates directory

package server

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}
)

func (s *HTTPServer) loadTemplates() {
	var errf bool
	s.templ = make(map[string]*template.Template)
	s.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
	s.res["bootstrap.css"] = []byte(bootstrapCSS)
	s.res["custom.css"] = []byte(customCSS)

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

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