license_model.go

package main

import (
	"bufio"
	"fmt"
	"log"
	"os"
	"strings"

	"github.com/charmbracelet/bubbles/list"
	"github.com/charmbracelet/bubbles/textarea"
	tea "github.com/charmbracelet/bubbletea"
	gloss "github.com/charmbracelet/lipgloss"
	cli "github.com/kyleochata/md_maker/licenseitem"
)

const (
	License_t string = "licenseType"
	License_c string = "licenseContent"
	License_w string = "createLicenseFile"
)

type Has_License_model struct {
	Answers
	licenseType string
	content     string
	TextArea    textarea.Model
	editContent bool //show ta or not
	makeFile    bool
}

func (m Has_License_model) Init() tea.Cmd { return nil }
func (m Has_License_model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
	switch msg := msg.(type) {
	case tea.WindowSizeMsg:
		m.handleWindowResize(msg)
		return m, tea.ClearScreen
	case tea.KeyMsg:
		switch msg.String() {
		case "ctrl+c":
			return m, tea.Quit
		case "tab":
			m.toggleTAFocus()
			return m, nil
		case "ctrl+l":
			m.save_license_data()
			return new_available_license_model(m.Answers), nil
		case "ctrl+n":
			if !m.editContent {
				m.save_license_data()
				return Send_to_Contributors(m.Answers)
			}
		}
	}
	if m.editContent {
		var cmd tea.Cmd
		if m.TextArea, cmd = m.TextArea.Update(msg); cmd != nil {
			return m, cmd
		}
	}
	return m, nil
}
func (m Has_License_model) View() string {
	var b strings.Builder
	b.WriteString(gloss.NewStyle().Margin(1, 0, 1, 0).Render("Edit License section of README\n"))
	b.WriteString(gloss.NewStyle().Margin(1, 0, 1, 0).Render(m.TextArea.View()))
	b.WriteString("Tab: Review Changes | Ctrl+L: Change License |Ctrl+C: Quit")
	if !m.editContent {
		b.Reset()
		b.WriteString(fmt.Sprintf("Found a %s type in your current working directory\n", m.licenseType))
		b.WriteString("The below content will be added to the License section of the README\n")
		b.WriteString(m.contentStyle() + "\n")
		b.WriteString("Tab: Edit license content | Ctrl+L: Change license type\n")
		b.WriteString("Ctrl+C: Quit | Ctrl+N: Next section")
	}
	return gloss.NewStyle().Width(m.Width).Align(gloss.Center).Render(b.String())
}
func (m *Has_License_model) save_license_data() {
	m.Responses[License_t] = m.licenseType
	m.Responses[License_c] = m.content
	m.Responses[License_w] = m.makeFile
}
func Send_to_Contributors(a Answers) (tea.Model, tea.Cmd) {
	return New_Contributors_model(a), SendWindowMsg(a.Height, a.Width)
}

func (m *Has_License_model) handleWindowResize(msg tea.WindowSizeMsg) {
	m.Height, m.Width = msg.Height, msg.Width
	m.TextArea.SetWidth(m.Width)
}

func (m *Has_License_model) toggleTAFocus() {
	if m.editContent {
		m.content = m.TextArea.Value()
		m.TextArea.Blur()
	} else {
		m.TextArea.Focus()
	}
	m.editContent = !m.editContent
}

func New_has_License_model(a Answers, l_type string, make bool) tea.Model {
	ta := textarea.New()
	ta.SetWidth(a.Width)
	ta.Focus()
	prev_l_type, _ := a.Responses[License_t].(string)
	prevContent, ok := a.Responses[License_c].(string)
	var content string
	//previous content is there and we aren't the model we are making has the same license type as our response, we want to give ta the content that the user edited.
	if ok && prevContent != "" && prev_l_type == l_type {
		ta.SetValue(prevContent)
	} else {
		content = readmeLicenseContent(l_type)
		ta.SetValue(content)
	}
	return Has_License_model{Answers: a, TextArea: ta, editContent: false, licenseType: l_type, makeFile: make, content: ta.Value()}
}
func readmeLicenseContent(lt string) string {
	var content string = ""
	if lt != "" {
		content = fmt.Sprintf("##License\n\n> %s\n>\n> Please review the %s file in this repository\nPlease click on the badge at the top of the README for additional information.", lt, strings.ToUpper(lt))
	}
	return content
}

func (m Has_License_model) contentStyle() string {
	return gloss.NewStyle().Align(gloss.Left).Border(gloss.RoundedBorder()).Width(m.Width-4).Margin(1, 0, 1, 0).Render(m.content)
}

type Fail_License_check_model struct {
	Answers
}

func (m Fail_License_check_model) Init() tea.Cmd { return nil }
func (m Fail_License_check_model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
	switch msg := msg.(type) {
	case tea.WindowSizeMsg:
		m.handleWindowResize(msg)
		return m, nil
	case tea.KeyMsg:
		switch msg.String() {
		case "ctrl+c":
			return m, tea.Quit
		case "ctrl+r":
			return m.retryLicenseCheck()
		case "tab":
			return m.send_to_Available_license_model()
		}
	}
	return m, nil
}
func (m Fail_License_check_model) View() string {
	var sb strings.Builder
	sb.WriteString("No License/license/LICENSE file detected\n")
	sb.WriteString("If you have a file with a license, please move it to the root of the current working directory.\n")
	sb.WriteString("Please ensure that it is named: License, LICENSE, or license.\n")
	sb.WriteString("Press Tab to create a LICENSE\n")
	sb.WriteString("Ctrl+C: Quit | Ctrl+N: Advance to next section | Tab: Create License")
	return sb.String()
}
func (m *Fail_License_check_model) handleWindowResize(msg tea.WindowSizeMsg) {
	m.Height, m.Width = msg.Height, msg.Width
}

func New_Fail_License_check_model(a Answers) tea.Model {
	return Fail_License_check_model{Answers: a}
}
func (m Fail_License_check_model) retryLicenseCheck() (tea.Model, tea.Cmd) {
	if LicenseFileExists() {
		return New_has_License_model(m.Answers, FindLicenseType(), false), func() tea.Msg {
			return tea.WindowSizeMsg{
				Height: m.Height,
				Width:  m.Width,
			}
		}
	}
	return m, nil
}

func (m Fail_License_check_model) send_to_Available_license_model() (tea.Model, tea.Cmd) {
	return new_available_license_model(m.Answers), func() tea.Msg {
		return tea.WindowSizeMsg{
			Height: m.Height,
			Width:  m.Width,
		}
	}
}

type available_license_model struct {
	Answers
	List list.Model
}

func (m available_license_model) Init() tea.Cmd { return nil }
func (m available_license_model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
	switch msg := msg.(type) {
	case tea.WindowSizeMsg:
		m.handleWindowResize(msg)
		return m, tea.ClearScreen
	case tea.KeyMsg:
		switch msg.String() {
		case "ctrl+c":
			return m, tea.Quit
		case "ctrl+b":
			return New_Fail_License_check_model(m.Answers), nil
		case "enter":
			return New_license_from_list_model(m.Answers, m.List.SelectedItem().FilterValue())
		}
	}
	var cmd tea.Cmd
	if m.List, cmd = m.List.Update(msg); cmd != nil {
		return m, cmd
	}
	return m, nil
}
func (m available_license_model) View() string {
	return gloss.NewStyle().Height(m.Height).Render(m.List.View())
}
func (m *available_license_model) handleWindowResize(msg tea.WindowSizeMsg) {
	m.Height, m.Width = msg.Height, msg.Width
	maxListHeight := m.Height / 3
	if maxListHeight < 12 {
		maxListHeight = 12
	}
}
func new_available_license_model(a Answers) tea.Model {
	litems := LoadLicenses()
	log.Println(litems)
	maxListHeight := a.Height / 3
	if maxListHeight < 12 {
		maxListHeight = 12
	}
	l := list.New(litems, cli.CustomDelegate{}, a.Width-2, maxListHeight)
	l.Title = "Available Licenses"
	return available_license_model{Answers: a, List: l}
}

func New_license_from_list_model(a Answers, l_type string) (tea.Model, tea.Cmd) {
	writeNewLicense := true
	prev_l_type := a.Responses[License_t].(string)
	if prev_l_type == l_type {
		writeNewLicense = false
	}
	log.Printf("Chosen license type: %s", l_type)
	log.Printf("Previous license type: %s", prev_l_type)
	log.Printf("WriteNewLicense: %v", writeNewLicense)
	return New_has_License_model(a, l_type, writeNewLicense), func() tea.Msg {
		return tea.WindowSizeMsg{
			Height: a.Height,
			Width:  a.Width,
		}
	}
}

func LoadLicenses() []list.Item {
	licenses, _ := cli.GetAvailableLicenses()
	listItems := make([]list.Item, len(licenses))
	for i, license := range licenses {
		listItems[i] = license
	}
	return listItems
}

func LicenseFileExists() bool {
	_, err1 := os.Stat("LICENSE")
	_, err2 := os.Stat("license")
	_, err3 := os.Stat("License")
	if os.IsNotExist(err1) && os.IsNotExist(err2) && os.IsNotExist(err3) {
		return false
	}
	return true
}

func FindLicenseType() string {
	// Try to open the file with possible variations of the license filename
	var file *os.File
	var err error

	// Check for "LICENSE", "license", or "License"
	for _, name := range []string{"LICENSE", "license", "License"} {
		file, err = os.Open(name)
		if err == nil {
			break // If the file opens successfully, exit the loop
		}
	}

	if err != nil {
		return "No license file found"
	}
	defer file.Close()

	// Read the file content to find the license type
	scanner := bufio.NewScanner(file)
	for scanner.Scan() {
		line := strings.ToLower(scanner.Text()) // Convert to lowercase for case-insensitive matching
		if strings.Contains(line, "mit license") {
			return "MIT License"
		}
		if strings.Contains(line, "gnu general public license") || strings.Contains(line, "gpl") {
			return "GNU General Public License"
		}
		if strings.Contains(line, "apache license") {
			return "Apache License"
		}
	}

	if err := scanner.Err(); err != nil {
		return "Error reading license file"
	}
	return ""
}