package utini

import (
	"sort"
	"strings"
)

type Comment string

type File struct {
	Sections map[string]*Section
}

func (f *File) CreateIfNotExists(name string) *Section {
	if f.Sections == nil {
		f.Sections = map[string]*Section{}
	}
	section := f.Sections[name]
	if section == nil {
		section = &Section{}
		f.Sections[name] = section
	}
	return section
}

type Property struct {
	Key, Value string
}

type Section struct {
	Properties []*Property
}

func (s Section) PropertyByKey(key string) *Property {
	key = strings.ToLower(key)
	for _, p := range s.Properties {
		if strings.ToLower(p.Key) == key {
			return p
		}
	}
	return nil
}

func (s Section) Keys() []string {
	keys := map[string]struct{}{}
	for _, property := range s.Properties {
		keys[property.Key] = struct{}{}
	}

	var sorted []string
	for key := range keys {
		sorted = append(sorted, key)
	}
	sort.Strings(sorted)
	return sorted
}