package ceph

import (
	"io/fs"
	"log"

	"asciigoat.org/ini/basic"
	"darvaza.org/core"
)

func loadConfSection(out *Config, src *basic.Section) error {
	switch src.Key {
	case "global":
		return loadGlobalConfSection(out, src)
	default:
		return core.Wrapf(fs.ErrInvalid, "unknown section %q", src.Key)
	}
}

func loadGlobalConfSection(out *Config, src *basic.Section) error {
	var cfg GlobalConfig

	for _, field := range src.Fields {
		if err := loadGlobalConfField(&cfg, field); err != nil {
			return core.Wrap(err, "global")
		}
	}

	out.Global = cfg
	return nil
}

func loadGlobalConfField(_ *GlobalConfig, field basic.Field) error {
	log.Printf("%s[%q] = %q", "global", field.Key, field.Value)
	return nil
}

func newConfigFromDocument(doc *basic.Document) (*Config, error) {
	var out Config

	if len(doc.Global) > 0 {
		err := core.Wrap(fs.ErrInvalid, "fields before the first section")
		return nil, err
	}

	for i := range doc.Sections {
		src := &doc.Sections[i]
		if err := loadConfSection(&out, src); err != nil {
			return nil, err
		}
	}

	return &out, nil
}