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package main

import (
	"encoding/csv"
	"os"
	"os/exec"
	"strings"

	tea "charm.land/bubbletea/v2"
)

type model struct {
	choices  [][]string
	cursor   int
	selected map[int]struct{}
}

func initialModel() model {
	out, err := exec.Command("hugo", "list", "drafts").Output()
	if err != nil {
		println("Error fetching Hugo drafts: Is this a Hugo site? Is Hugo installed?")
		os.Exit(1)
	}

	csvReader := csv.NewReader(strings.NewReader(string(out)))
	records, err := csvReader.ReadAll()
	if err != nil {
		println("Error parsing draft list.")
		os.Exit(1)
	}
	if len(records) <= 1 {
		println("No drafts found.")
		os.Exit(1)
	}

	return model{
		choices:  records,
		selected: make(map[int]struct{}),
	}
}

func (m model) Init() tea.Cmd {
	return nil
}

func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
	switch msg := msg.(type) {
	case tea.KeyPressMsg:
		switch msg.String() {
		case "ctrl+c", "q":
			return m, tea.Quit
		case "up", "k":
			if m.cursor > 0 {
				m.cursor--
			}
		case "down", "j":
			if m.cursor < len(m.choices)-1 {
				m.cursor++
			}
		case "enter":
			choice := m.choices[m.cursor]
			path := choice[0]
			return m, openEditor(path)
		case "space":
			_, ok := m.selected[m.cursor]
			if ok {
				delete(m.selected, m.cursor)
			} else {
				m.selected[m.cursor] = struct{}{}
			}
		}
	case editorFinishedMsg:
		return m, tea.Quit
	}
	return m, nil
}