feat: add Banking TUI shell using bubbletea
Add an 80s-style green-on-black bank terminal shell ("banking") using
charmbracelet/bubbletea for full-screen TUI rendering over SSH.
Screens: login, main menu, account summary, account detail with
transactions, wire transfer wizard (6-step form capturing routing
number, destination, beneficiary, amount, memo, auth code), transaction
history with pagination, secure messages with breadcrumb content (fake
internal IPs, vault codes), change PIN, and hidden admin access (99)
that locks after 3 failed attempts with COBOL-style error output.
All key actions (login, navigation, wire transfers, admin attempts) are
logged to the session store. Wire transfer data is the honeypot gold.
Configurable via [shell.banking] in TOML: bank_name, terminal_id, region.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
213
internal/shell/banking/screen_accounts.go
Normal file
213
internal/shell/banking/screen_accounts.go
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@@ -0,0 +1,213 @@
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package banking
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import (
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"fmt"
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"strings"
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tea "github.com/charmbracelet/bubbletea"
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)
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// --- Account Summary ---
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type accountSummaryModel struct {
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accounts []Account
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}
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func newAccountSummaryModel(accounts []Account) accountSummaryModel {
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return accountSummaryModel{accounts: accounts}
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}
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func (m accountSummaryModel) Update(_ tea.Msg) (accountSummaryModel, tea.Cmd) {
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// Any key returns to menu.
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return m, nil
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}
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func (m accountSummaryModel) View() string {
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var b strings.Builder
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b.WriteString("\n")
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b.WriteString(centerText("ACCOUNT SUMMARY"))
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b.WriteString("\n\n")
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b.WriteString(thinDivider())
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b.WriteString("\n\n")
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// Header.
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b.WriteString(titleStyle.Render(fmt.Sprintf(" %-12s %-18s %18s", "ACCOUNT", "TYPE", "BALANCE")))
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b.WriteString("\n")
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b.WriteString(dimStyle.Render(" " + strings.Repeat("-", 50)))
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b.WriteString("\n")
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total := int64(0)
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for _, acct := range m.accounts {
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total += acct.Balance
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b.WriteString(baseStyle.Render(fmt.Sprintf(" %-12s %-18s %18s",
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acct.Number, acct.Type, formatCurrency(acct.Balance))))
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b.WriteString("\n")
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}
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b.WriteString(dimStyle.Render(" " + strings.Repeat("-", 50)))
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b.WriteString("\n")
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b.WriteString(titleStyle.Render(fmt.Sprintf(" %-12s %-18s %18s", "", "TOTAL", formatCurrency(total))))
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b.WriteString("\n\n")
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b.WriteString(thinDivider())
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b.WriteString("\n\n")
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b.WriteString(dimStyle.Render(" PRESS ANY KEY TO RETURN TO MAIN MENU"))
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b.WriteString("\n")
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return b.String()
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}
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// --- Account Detail (with transactions) ---
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type accountDetailModel struct {
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accounts []Account
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transactions map[string][]Transaction
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selected int
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page int
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pageSize int
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choosing bool
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choice string
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}
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func newAccountDetailModel(accounts []Account, transactions map[string][]Transaction) accountDetailModel {
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return accountDetailModel{
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accounts: accounts,
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transactions: transactions,
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choosing: true,
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pageSize: 10,
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}
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}
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func (m accountDetailModel) Update(msg tea.Msg) (accountDetailModel, tea.Cmd) {
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keyMsg, ok := msg.(tea.KeyMsg)
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if !ok {
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return m, nil
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}
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if m.choosing {
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switch keyMsg.Type {
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case tea.KeyEnter:
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for i := range m.accounts {
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if m.choice == fmt.Sprintf("%d", i+1) {
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m.selected = i
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m.choosing = false
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m.page = 0
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break
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}
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}
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if m.choice == "0" {
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m.choice = "back"
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}
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return m, nil
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case tea.KeyBackspace:
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if len(m.choice) > 0 {
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m.choice = m.choice[:len(m.choice)-1]
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}
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default:
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ch := keyMsg.String()
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if len(ch) == 1 && ch[0] >= '0' && ch[0] <= '9' {
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m.choice += ch
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}
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}
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} else {
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switch keyMsg.String() {
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case "n", "N":
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acctNum := m.accounts[m.selected].Number
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txns := m.transactions[acctNum]
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maxPage := (len(txns) - 1) / m.pageSize
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if m.page < maxPage {
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m.page++
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}
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case "p", "P":
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if m.page > 0 {
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m.page--
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}
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case "b", "B":
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m.choosing = true
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m.choice = ""
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default:
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m.choice = "back"
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}
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}
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return m, nil
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}
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func (m accountDetailModel) View() string {
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if m.choosing {
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return m.viewChooseAccount()
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}
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return m.viewDetail()
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}
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func (m accountDetailModel) viewChooseAccount() string {
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var b strings.Builder
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b.WriteString("\n")
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b.WriteString(centerText("ACCOUNT DETAIL"))
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b.WriteString("\n\n")
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b.WriteString(thinDivider())
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b.WriteString("\n\n")
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b.WriteString(titleStyle.Render(" SELECT ACCOUNT:"))
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b.WriteString("\n\n")
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for i, acct := range m.accounts {
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b.WriteString(baseStyle.Render(fmt.Sprintf(" [%d] %s - %s %s",
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i+1, acct.Number, acct.Type, formatCurrency(acct.Balance))))
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b.WriteString("\n")
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}
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b.WriteString("\n")
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b.WriteString(baseStyle.Render(" [0] RETURN TO MAIN MENU"))
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b.WriteString("\n\n")
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b.WriteString(thinDivider())
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b.WriteString("\n\n")
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b.WriteString(titleStyle.Render(" ENTER SELECTION: "))
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b.WriteString(inputStyle.Render(m.choice))
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b.WriteString(inputStyle.Render("_"))
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b.WriteString("\n")
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return b.String()
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}
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func (m accountDetailModel) viewDetail() string {
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var b strings.Builder
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acct := m.accounts[m.selected]
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txns := m.transactions[acct.Number]
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b.WriteString("\n")
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b.WriteString(centerText(fmt.Sprintf("ACCOUNT DETAIL - %s", acct.Number)))
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b.WriteString("\n\n")
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b.WriteString(baseStyle.Render(fmt.Sprintf(" TYPE: %s", acct.Type)))
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b.WriteString("\n")
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b.WriteString(baseStyle.Render(fmt.Sprintf(" BALANCE: %s", formatCurrency(acct.Balance))))
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b.WriteString("\n\n")
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b.WriteString(thinDivider())
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b.WriteString("\n\n")
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// Header.
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b.WriteString(titleStyle.Render(fmt.Sprintf(" %-12s %-34s %12s %12s", "DATE", "DESCRIPTION", "AMOUNT", "BALANCE")))
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b.WriteString("\n")
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b.WriteString(dimStyle.Render(" " + strings.Repeat("-", 72)))
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b.WriteString("\n")
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// Paginate.
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start := m.page * m.pageSize
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end := min(start+m.pageSize, len(txns))
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for _, txn := range txns[start:end] {
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b.WriteString(baseStyle.Render(fmt.Sprintf(" %-12s %-34s %12s %12s",
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txn.Date, txn.Description, formatCurrency(txn.Amount), formatCurrency(txn.Balance))))
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b.WriteString("\n")
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}
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b.WriteString("\n")
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totalPages := (len(txns) + m.pageSize - 1) / m.pageSize
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b.WriteString(dimStyle.Render(fmt.Sprintf(" PAGE %d OF %d", m.page+1, totalPages)))
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b.WriteString("\n\n")
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b.WriteString(dimStyle.Render(" [N]EXT PAGE [P]REV PAGE [B]ACK ANY OTHER KEY = MAIN MENU"))
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b.WriteString("\n")
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return b.String()
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}
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