/*******************************************************************************
* Copyright 2022 Stefan Majewsky <majewsky@gmx.net>
* SPDX-License-Identifier: GPL-3.0-only
* Refer to the file "LICENSE" for details.
*******************************************************************************/

package main

import (
	"fmt"
	"os"
	"strings"

	"github.com/sapcc/go-bits/logg"
	"github.com/sapcc/go-bits/must"
)

func main() {
	input := string(must.Return(os.ReadFile("../pad.md")))
	must.Succeed(os.MkdirAll("../out", 0777))

	//each shownotes start with a second-level header, e.g. `## Juli 2018`
	for idx, section := range strings.Split(input, "\n## ") {
		//ignore the part before the first header
		if idx == 0 {
			continue
		}

		//derive the filename from the rest of the header line
		headerText, _, _ := strings.Cut(section, "\n")
		headerText = strings.TrimSpace(headerText)
		switch dateForHeaderText[headerText] {
		case "":
			logg.Fatal("no date known for header text %q", headerText)
		case "skip":
			continue //this section is not a shownotes, so do not write a file
		}
		filename := fmt.Sprintf("../out/shownotes-historic-%s.txt", dateForHeaderText[headerText])

		//put in the characters that we lost in the split
		section = "## " + section + "\n"
		must.Succeed(os.WriteFile(filename, []byte(section), 0666))
	}
}

var dateForHeaderText = map[string]string{
	"April 2015":          "2015-04",
	"April(, April) 2016": "2016-04",
	"April 2017":          "2017-04",
	"April 2018":          "2018-04",
	"August 2014":         "2014-08",
	"August 2016":         "2016-08",
	"August 2017":         "skip", // no show
	"August 2018":         "2018-08",
	"Dezember 2014":       "2014-12",
	"Schneezember 2015":   "2015-12",
	"Dezember 2016":       "2016-12",
	"Dezember 2017":       "2017-12",
	"Februar 2015":        "2015-02",
	"Fairbrew 2016":       "2016-02",
	"Februar 2017":        "2017-02",
	"Februar 2018":        "2018-02",
	"Februar 2019":        "2019-02",
	"Januar 2015":         "2015-01",
	"Janvier 2016":        "2016-01",
	"Januar 2017":         "2017-01",
	"Januar 2018":         "2018-01",
	"Januar 2019":         "2019-01",
	"Juli 2014":           "2014-07",
	"Juli 2015":           "2015-07",
	"Juli 2016":           "2016-07",
	"Juli 2017":           "2017-07",
	"Juli 2018":           "2018-07",
	"Juni 2015":           "2015-06",
	"Juni 2016":           "2016-06",
	"Juni 2018":           "2018-06",
	"Mai 2015":            "2015-05",
	"May(hem) 2016":       "2016-05",
	"Mai 2017":            "2017-05",
	"Mai 2018":            "2018-05",
	"März 2015":           "2015-03",
	"M(ehr H)erz 2016":    "2016-03",
	"März 2017":           "2017-03",
	"März 2018":           "2018-03",
	"November 2014":       "2014-11",
	"Movember 2015":       "2015-11",
	"November 2016":       "2016-11",
	"November 2017":       "2017-11",
	"November 2018":       "2018-11",
	"Octobre 2014":        "2014-10",
	"Oktober 2015":        "2015-10",
	"Oktober 2016":        "2016-10",
	"Oktober 2017":        "skip", //no show
	"Oktober 2018":        "2018-10",
	"September 2014":      "2014-09",
	"September 2015":      "2015-09",
	"September 2016":      "2016-09",
	"September 2017":      "skip", //no show
	"September 2018":      "2018-09",
	"Themenvorschläge":    "skip",
	"geplant für Januar 2019, aber zurückgestellt wegen Terminkonflikt": "skip",
}