package d2target

import (
	"fmt"
)

const (
	PrefixPadding = 10
	PrefixWidth   = 20
	CenterPadding = 50
	// 10px of padding top and bottom so text doesn't look squished
	VerticalPadding = 20
)

type Class struct {
	Fields  []ClassField  `json:"fields"`
	Methods []ClassMethod `json:"methods"`
}

type ClassField struct {
	Name       string `json:"name"`
	Type       string `json:"type"`
	Visibility string `json:"visibility"`
}

func (cf ClassField) Text(fontSize int) *MText {
	return &MText{
		Text:     fmt.Sprintf("%s%s", cf.Name, cf.Type),
		FontSize: fontSize,
		IsBold:   false,
		IsItalic: false,
		Shape:    "class",
	}
}

func (cf ClassField) VisibilityToken() string {
	switch cf.Visibility {
	case "protected":
		return "#"
	case "private":
		return "-"
	default:
		return "+"
	}
}

func (cf ClassField) GetUniqueChars(uniqueMap map[rune]bool) string {
	var uniqueChars string
	for _, char := range "+-#" {
		if _, exists := uniqueMap[char]; !exists {
			uniqueMap[char] = true
			uniqueChars = uniqueChars + string(char)
		}
	}
	for _, char := range cf.Name {
		if _, exists := uniqueMap[char]; !exists {
			uniqueMap[char] = true
			uniqueChars = uniqueChars + string(char)
		}
	}
	for _, char := range cf.Type {
		if _, exists := uniqueMap[char]; !exists {
			uniqueMap[char] = true
			uniqueChars = uniqueChars + string(char)
		}
	}
	for _, char := range cf.Visibility {
		if _, exists := uniqueMap[char]; !exists {
			uniqueMap[char] = true
			uniqueChars = uniqueChars + string(char)
		}
	}
	return uniqueChars
}

type ClassMethod struct {
	Name       string `json:"name"`
	Return     string `json:"return"`
	Visibility string `json:"visibility"`
}

func (cm ClassMethod) Text(fontSize int) *MText {
	return &MText{
		Text:     fmt.Sprintf("%s%s", cm.Name, cm.Return),
		FontSize: fontSize,
		IsBold:   false,
		IsItalic: false,
		Shape:    "class",
	}
}

func (cm ClassMethod) VisibilityToken() string {
	switch cm.Visibility {
	case "protected":
		return "#"
	case "private":
		return "-"
	default:
		return "+"
	}
}

func (cm ClassMethod) GetUniqueChars(uniqueMap map[rune]bool) string {
	var uniqueChars string
	for _, char := range "+-#" {
		if _, exists := uniqueMap[char]; !exists {
			uniqueMap[char] = true
			uniqueChars = uniqueChars + string(char)
		}
	}
	for _, char := range cm.Name {
		if _, exists := uniqueMap[char]; !exists {
			uniqueMap[char] = true
			uniqueChars = uniqueChars + string(char)
		}
	}
	for _, char := range cm.Return {
		if _, exists := uniqueMap[char]; !exists {
			uniqueMap[char] = true
			uniqueChars = uniqueChars + string(char)
		}
	}
	for _, char := range cm.Visibility {
		if _, exists := uniqueMap[char]; !exists {
			uniqueMap[char] = true
			uniqueChars = uniqueChars + string(char)
		}
	}
	return uniqueChars
}