package bible

import "github.com/lukaszkasprzak/lectio/internal/ini"

// CorpusMeta is the sidecar metadata for a bible corpus (<code>.ini).
// Autoselect (default true) governs whether the corpus may be picked by the
// reading resolver's language auto-match; a corpus with Autoselect=false stays
// reachable only via an explicit reading_version or --ref (e.g. the built-in
// wuj, which is incomplete). See docs national-bibles design.
type CorpusMeta struct {
	Code, Lang, Name, PsalmSystem, Sigla string
	Autoselect                           bool
}

// parseCorpusMeta reads a section-less sidecar. ini.Parse returns
// []ini.Section{Name, Pairs}; keys before any [section] land in the section
// whose Name == "" (verified against internal/ini).
func parseCorpusMeta(code string, data []byte) CorpusMeta {
	m := CorpusMeta{Code: code, Autoselect: true} // absent autoselect => true
	secs, err := ini.Parse(data)
	if err != nil {
		return m
	}
	for _, s := range secs {
		if s.Name != "" {
			continue
		}
		for _, p := range s.Pairs {
			switch p.Key {
			case "lang":
				m.Lang = p.Val
			case "name":
				m.Name = p.Val
			case "psalm_system":
				m.PsalmSystem = p.Val
			case "sigla":
				m.Sigla = p.Val
			case "autoselect":
				m.Autoselect = p.Val != "false"
			}
		}
	}
	return m
}

func embeddedCorpusMeta(code string) (CorpusMeta, bool) {
	data, err := corporaFS.ReadFile("corpora/" + code + ".ini")
	if err != nil {
		return CorpusMeta{}, false
	}
	return parseCorpusMeta(code, data), true
}