package banking

import (
	"fmt"
	"strings"

	tea "github.com/charmbracelet/bubbletea"
)

type adminModel struct {
	pin      string
	attempts int
	locked   bool
}

func newAdminModel() adminModel {
	return adminModel{}
}

func (m adminModel) Update(msg tea.Msg) (adminModel, tea.Cmd) {
	if m.locked {
		return m, nil
	}

	keyMsg, ok := msg.(tea.KeyMsg)
	if !ok {
		return m, nil
	}

	switch keyMsg.Type {
	case tea.KeyEnter:
		if m.pin != "" {
			m.attempts++
			if m.attempts >= 3 {
				m.locked = true
			}
			m.pin = ""
		}
	case tea.KeyBackspace:
		if len(m.pin) > 0 {
			m.pin = m.pin[:len(m.pin)-1]
		}
	default:
		ch := keyMsg.String()
		if len(ch) == 1 && ch[0] >= 32 && ch[0] < 127 && len(m.pin) < 20 {
			m.pin += ch
		}
	}
	return m, nil
}

func (m adminModel) View() string {
	var b strings.Builder

	b.WriteString("\n")
	b.WriteString(centerText("SYSTEM ADMINISTRATION"))
	b.WriteString("\n\n")
	b.WriteString(thinDivider())
	b.WriteString("\n\n")

	if m.locked {
		b.WriteString(errorStyle.Render("  *** ACCESS DENIED ***"))
		b.WriteString("\n\n")
		b.WriteString(errorStyle.Render("  MAXIMUM AUTHENTICATION ATTEMPTS EXCEEDED"))
		b.WriteString("\n")
		b.WriteString(errorStyle.Render("  TERMINAL LOCKED - INCIDENT LOGGED"))
		b.WriteString("\n\n")
		b.WriteString(baseStyle.Render("  SECURITY ALERT HAS BEEN DISPATCHED TO:"))
		b.WriteString("\n")
		b.WriteString(baseStyle.Render("    - INFORMATION SECURITY DEPT"))
		b.WriteString("\n")
		b.WriteString(baseStyle.Render("    - BRANCH SECURITY OFFICER"))
		b.WriteString("\n")
		b.WriteString(baseStyle.Render("    - FEDERAL RESERVE OVERSIGHT"))
		b.WriteString("\n\n")
		b.WriteString(baseStyle.Render(fmt.Sprintf("  INCIDENT REF: SEC-%d-ADMIN-BRUTE", 20240000+m.attempts)))
		b.WriteString("\n\n")
		b.WriteString(dimStyle.Render("  IEF4271I UNAUTHORIZED ACCESS ATTEMPT - ABEND S0C4"))
		b.WriteString("\n")
		b.WriteString(dimStyle.Render("  IEF4272I JOB SECADMIN  STEP0001 - COND CODE 4088"))
		b.WriteString("\n\n")
		b.WriteString(thinDivider())
		b.WriteString("\n\n")
		b.WriteString(dimStyle.Render("  PRESS ANY KEY TO RETURN TO MAIN MENU"))
		b.WriteString("\n")
	} else {
		b.WriteString(titleStyle.Render("  RESTRICTED ACCESS - ADMINISTRATOR ONLY"))
		b.WriteString("\n\n")
		b.WriteString(baseStyle.Render("  THIS FUNCTION REQUIRES LEVEL 5 SECURITY CLEARANCE."))
		b.WriteString("\n")
		b.WriteString(baseStyle.Render("  ALL ACCESS ATTEMPTS ARE LOGGED AND AUDITED."))
		b.WriteString("\n\n")

		if m.attempts > 0 {
			b.WriteString(errorStyle.Render(fmt.Sprintf("  INVALID CREDENTIALS (%d OF 3 ATTEMPTS)", m.attempts)))
			b.WriteString("\n\n")
		}

		b.WriteString(titleStyle.Render("  ADMIN PIN: "))
		masked := strings.Repeat("*", len(m.pin))
		b.WriteString(inputStyle.Render(masked))
		b.WriteString(inputStyle.Render("_"))
		b.WriteString("\n\n")
		b.WriteString(thinDivider())
		b.WriteString("\n\n")
		b.WriteString(dimStyle.Render("  PRESS ESC TO RETURN TO MAIN MENU"))
		b.WriteString("\n")
	}

	return b.String()
}