package tui

import (
	"github.com/lerko/nib/internal/carddata"
	"github.com/lerko/nib/internal/db"
	"github.com/lerko/nib/internal/display"
)

type promoteOption struct {
	cardType db.CardType
	label    string
	group    string
}

var promoteOptions = []promoteOption{
	{db.CardSnippet, "snippet", "grab"},
	{db.CardNote, "note", "read"},
	{db.CardLink, "link", "read"},
	{db.CardDecision, "decision", "read"},
	{db.CardTemplate, "template", "fill"},
	{db.CardChecklist, "checklist", "fill"},
}

type promoteModel struct {
	cursor    int
	entityID  string
	body      string
	suggested *db.CardType
}

func newPromoteModel(entityID, body string) promoteModel {
	return promoteModel{
		entityID:  entityID,
		body:      body,
		suggested: carddata.DetectCardType(body),
	}
}

func (p promoteModel) selectedType() db.CardType {
	return promoteOptions[p.cursor].cardType
}

func (p promoteModel) update(key string) promoteModel {
	switch key {
	case "up", "k":
		if p.cursor > 0 {
			p.cursor--
		}
	case "down", "j":
		if p.cursor < len(promoteOptions)-1 {
			p.cursor++
		}
	}
	return p
}

func (p promoteModel) view(width int) string {
	var b string
	b += titleStyle.Render("promote to card") + "\n\n"

	currentGroup := ""
	for i, opt := range promoteOptions {
		if opt.group != currentGroup {
			currentGroup = opt.group
			b += dateHeaderStyle.Render("── "+currentGroup+" ──") + "\n"
		}

		glyph := display.DisplayGlyph(db.GlyphNote, &opt.cardType)
		label := glyph + " " + opt.label

		if p.suggested != nil && *p.suggested == opt.cardType {
			label += " " + affordanceStyle.Render("*")
		}

		if i == p.cursor {
			b += selectedItemStyle.Render(" "+label) + "\n"
		} else {
			b += listItemStyle.Render(label) + "\n"
		}
	}

	b += "\n" + helpStyle.Render("enter:select  esc:cancel")
	return b
}