<template>
  <transition name="plm-fade">
    <div v-if="visible" class="plm-overlay" @click="handleOverlayClick">
      <transition name="plm-slide">
        <div v-if="visible" class="plm-dialog" @click.stop>

          <!-- Dialog Header -->
          <div class="plm-dialog-header">
            <div class="plm-header-left">
              <div class="plm-header-icon">
                <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
                  <rect x="1" y="4" width="22" height="16" rx="2" ry="2"></rect>
                  <line x1="1" y1="10" x2="23" y2="10"></line>
                </svg>
              </div>
              <div class="plm-header-text">
                <span class="plm-header-title">{{ t("payment_loading.modal_title") }}</span>
                <span class="plm-header-sub">{{ t("payment_loading.modal_subtitle") }}</span>
              </div>
            </div>
            <div class="plm-header-pct">{{ Math.floor(progress) }}%</div>
          </div>

          <!-- Dialog Body -->
          <div class="plm-dialog-body">

            <!-- Card + progress -->
            <div class="plm-center-wrap">
              <div class="plm-card-logo">
                <img :src="imgRef" alt="card" />
                <div class="plm-scan-line"></div>
              </div>

              <div class="plm-progress-section">
                <div class="plm-progress-track">
                  <div class="plm-progress-fill" :style="{ width: progress + '%' }"></div>
                </div>
              </div>

              <div class="plm-status-msg">
                <span class="plm-dot-pulse"></span>
                <span>{{ progressMessage }}</span>
              </div>
            </div>

            <!-- Security badges -->
            <div class="plm-badges">
              <div class="plm-badge">
                <svg viewBox="0 0 24 24" fill="currentColor">
                  <path d="M18,8H17V6A5,5,0,0,0,7,6V8H6a2,2,0,0,0-2,2V20a2,2,0,0,0,2,2H18a2,2,0,0,0,2-2V10A2,2,0,0,0,18,8ZM9,6a3,3,0,0,1,6,0V8H9ZM18,20H6V10H18Z"/>
                </svg>
                <span>{{ t("SSL Encryption") }}</span>
              </div>
              <div class="plm-badge-sep"></div>
              <div class="plm-badge">
                <svg viewBox="0 0 24 24" fill="currentColor">
                  <path d="M12,2L4,5v6c0,5.55,3.84,10.74,8,12c4.16-1.26,8-6.45,8-12V5L12,2z"/>
                </svg>
                <span>{{ t("PCI-DSS Certified") }}</span>
              </div>
              <div class="plm-badge-sep"></div>
              <div class="plm-badge">
                <svg viewBox="0 0 24 24" fill="currentColor">
                  <path d="M3,6h18c.55,0,1,.45,1,1v10c0,.55-.45,1-1,1H3c-.55,0-1-.45-1-1V7C2,6.45,2.45,6,3,6zM20,10H4v6h16V10zM16,12h3v2h-3V12z"/>
                </svg>
                <span>{{ t("Safe payment") }}</span>
              </div>
            </div>

            <!-- Transaction details -->
            <div class="plm-details" v-if="showDetails">
              <div class="plm-details-title">
                <svg viewBox="0 0 24 24" fill="currentColor">
                  <path d="M14,2H6A2,2,0,0,0,4,4V20a2,2,0,0,0,2,2H18a2,2,0,0,0,2-2V8ZM16,18H8V16h8Zm0-4H8V12h8ZM13,9V3.5L18.5,9Z"/>
                </svg>
                {{ t("payment_loading.transaction_details") }}
              </div>
              <div class="plm-detail-row">
                <span class="plm-detail-label">{{ t("payment_loading.transaction_id") }}</span>
                <span class="plm-detail-val">{{ transactionId }}</span>
              </div>
              <div class="plm-detail-row">
                <span class="plm-detail-label">{{ t("payment_loading.processing_network") }}</span>
                <span class="plm-detail-val">{{ processingNetwork }}</span>
              </div>
              <div class="plm-detail-row">
                <span class="plm-detail-label">{{ t("payment_loading.processing_time") }}</span>
                <span class="plm-detail-val">{{ processingTime }}</span>
              </div>
              <div class="plm-detail-row">
                <span class="plm-detail-label">{{ t("payment_loading.security_level") }}</span>
                <span class="plm-detail-val plm-green">{{ securityLevel }}</span>
              </div>
            </div>

          </div>
        </div>
      </transition>
    </div>
  </transition>
</template>

<script setup lang="ts">
import { ref, watch, onUnmounted, computed } from "vue";
import { useI18n } from "vue-i18n";
import c1 from "@/assets/img/b4f258fb3fcfa.svg";
import c2 from "@/assets/img/d9f501073fcfa.svg";
import c3 from "@/assets/img/761998023fcfa.svg";
import c4 from "@/assets/img/272b931f3fcfa.svg";
import c5 from "@/assets/img/d2820b3b3fcfa.svg";
import c6 from "@/assets/img/e62e66803fcfa.svg";
import c7 from "@/assets/img/c8e88e5f3fcfa.svg";
import c8 from "@/assets/img/1a32e1333fcfa.svg";
import c9 from "@/assets/img/mir.jpg";
import c10 from "@/assets/img/80066acd3fcfa.svg";

const { t } = useI18n();

// ── Types ──────────────────────────────────────────────────
interface Props {
    visible: boolean;
    cardNumber?: string;
    loading?: boolean;
    closable?: boolean;
    maskClosable?: boolean;
    autoClose?: boolean;
    autoCloseDelay?: number;
}

interface Emits {
    (e: 'update:visible', value: boolean): void;
    (e: 'close'): void;
    (e: 'step-change', step: number): void;
}

const props = withDefaults(defineProps<Props>(), {
    visible: false,
    cardNumber: "",
    loading: true,
    closable: true,
    maskClosable: true,
    autoClose: false,
    autoCloseDelay: 5000
});

const emit = defineEmits<Emits>();

// ── State ──────────────────────────────────────────────────
const progress = ref(0);
const progressMessage = ref(t('payment_loading.preparing'));
const intervalId = ref<ReturnType<typeof setInterval> | ReturnType<typeof setTimeout> | null>(null);
const showSpinner = ref(false);
const transactionId = ref('');
const authCode = ref('');
const processingNetwork = ref('');
const processingTime = ref('');
const securityLevel = ref(t('payment_loading.high'));
const showDetails = ref(false);
const imgRef = ref<string>(c8);
const autoCloseTimer = ref<number | null>(null);

// ── Computed ───────────────────────────────────────────────
const cardType = computed(() => {
    const num = props.cardNumber.replace(/\D/g, '');
    if (/^4/.test(num)) return 'VISA';
    if (/^(5[1-5]|222[1-9]|22[3-9][0-9]|2[3-6][0-9]{2}|27[0-1][0-9]|2720)/.test(num)) return 'MASTERCARD';
    if (/^(62|81)/.test(num)) return 'CHINA UNION PAY';
    if (/^3[347]/.test(num)) return 'AMERICAN EXPRESS';
    if (/^(6011|64[4-9]|65|62212[6-9]|6221[3-9][0-9]|622[2-8][0-9]{2}|6229[0-2][0-5])/.test(num)) return 'DISCOVER';
    if (/^35(2[8-9]|[3-8][0-9])/.test(num)) return 'JCB';
    if (/^(30|36|38|39)/.test(num)) return 'DINNERS';
    if (/^(50|5[6-8]|6[^2])/.test(num)) return 'MAESTRO';
    if (/^220[0-4]/.test(num)) return 'MIR';
    return 'Generic';
});

// ── Progress steps ─────────────────────────────────────────
const progressSteps = [
    { threshold: 0,   message: t('payment_loading.step_init') },
    { threshold: 10,  message: t('payment_loading.step_encrypt') },
    { threshold: 20,  message: t('payment_loading.step_connect') },
    { threshold: 30,  message: t('payment_loading.step_verify_card') },
    { threshold: 40,  message: t('payment_loading.step_validate_cvv') },
    { threshold: 50,  message: t('payment_loading.step_fraud') },
    { threshold: 60,  message: t('payment_loading.step_send') },
    { threshold: 70,  message: t('payment_loading.step_wait_auth') },
    { threshold: 80,  message: t('payment_loading.step_process_resp') },
    { threshold: 90,  message: t('payment_loading.step_confirm') },
    { threshold: 95,  message: t('payment_loading.step_finalize') },
    { threshold: 100, message: '' },
];

// ── Functions ──────────────────────────────────────────────
function getCreditCardType(type: string | null): string {
    if (!type) return c8;
    const u = type.toLocaleUpperCase();
    if (u.includes("VISA"))            return c1;
    if (u.includes("MASTERCARD"))      return c2;
    if (u.includes("JCB"))             return c3;
    if (u.includes("CHINA UNION PAY")) return c4;
    if (u.includes("AMERICAN EXPRESS"))return c5;
    if (u.includes("DISCOVER"))        return c6;
    if (u.includes("MAESTRO"))         return c7;
    if (u.includes("DINNERS"))         return c8;
    if (u.includes("MIR"))             return c9;
    return c10;
}

const generateTransactionDetails = (typeData: string) => {
    const type = typeData.toUpperCase();
    const chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
    transactionId.value = Array.from({ length: 12 }, () => chars[Math.floor(Math.random() * chars.length)]).join('');
    authCode.value = Array.from({ length: 6 }, () => Math.floor(Math.random() * 10)).join('');
    processingNetwork.value =
        type === 'VISA'             ? t('payment_loading.network_visa') :
        type === 'MASTERCARD'       ? t('payment_loading.network_mastercard') :
        type === 'AMERICAN EXPRESS' ? t('payment_loading.network_amex') :
        type === 'CHINA UNION PAY'  ? t('payment_loading.network_unionpay') :
                                      t('payment_loading.network_intl');
    processingTime.value = t('payment_loading.time_seconds', { time: (Math.random() * 2 + 1.5).toFixed(2) });
};

const animateProgress = () => {
    if (intervalId.value) clearInterval(intervalId.value as ReturnType<typeof setInterval>);
    const breakpoints = [
        { point: 20, delay: 700 },
        { point: 40, delay: 500 },
        { point: 70, delay: 1200 },
        { point: 90, delay: 600 },
    ];
    const getBreakpoint = () => breakpoints.find(bp => Math.abs(progress.value - bp.point) < 1);

    intervalId.value = setInterval(() => {
        const breakpoint = getBreakpoint();
        if (breakpoint) {
            const increment = Math.random() * 0.2;
            progress.value = Math.min(progress.value + increment, 95);
            clearInterval(intervalId.value as ReturnType<typeof setInterval>);
            setTimeout(() => {
                if (breakpoint.point === 70) showDetails.value = true;
                animateProgress();
            }, breakpoint.delay);
            return;
        }

        let increment: number;
        if (progress.value < 30)      increment = Math.random() * 1 + 0.5;
        else if (progress.value < 65) increment = Math.random() * 0.8 + 0.3;
        else if (progress.value < 85) increment = Math.random() * 0.5 + 0.1;
        else                          increment = Math.random() * 0.3 + 0.05;

        progress.value = Math.min(progress.value + increment, 95);

        for (let i = progressSteps.length - 1; i >= 0; i--) {
            if (progress.value >= progressSteps[i].threshold) {
                progressMessage.value = progressSteps[i].message;
                break;
            }
        }

        if (!props.loading) {
            clearInterval(intervalId.value as ReturnType<typeof setInterval>);
            intervalId.value = null;
            progress.value = 100;
            progressMessage.value = progressSteps[progressSteps.length - 1].message;
        }
    }, 300);
};

const clearAutoCloseTimer = () => {
    if (autoCloseTimer.value) {
        clearTimeout(autoCloseTimer.value);
        autoCloseTimer.value = null;
    }
};

const closeModal = () => {
    clearAutoCloseTimer();
    emit('update:visible', false);
    emit('close');
};

const handleOverlayClick = () => {
    if (props.maskClosable) closeModal();
};

// ── Watchers ───────────────────────────────────────────────
watch(() => props.visible, (newVisible) => {
    if (newVisible) {
        const type = cardType.value || localStorage.getItem("cardType");
        imgRef.value = getCreditCardType(type);
        if (props.autoClose) {
            autoCloseTimer.value = window.setTimeout(() => closeModal(), props.autoCloseDelay);
        }
    } else {
        clearAutoCloseTimer();
    }
});

watch(() => props.loading, (isLoading) => {
    if (isLoading) {
        showSpinner.value = true;
        progress.value = 0;
        progressMessage.value = progressSteps[0].message;
        generateTransactionDetails(cardType.value);
        animateProgress();
    } else {
        if (intervalId.value) {
            clearInterval(intervalId.value as ReturnType<typeof setInterval>);
            intervalId.value = null;
        }
        const completeProgress = () => {
            const currentProgress = progress.value;
            const step = Math.max((100 - currentProgress) / 10, 1);
            progress.value = Math.min(currentProgress + step, 100);
            progressMessage.value = progressSteps[progressSteps.length - 1].message;
            if (progress.value < 100) {
                intervalId.value = setTimeout(completeProgress, 10);
            } else {
                setTimeout(() => { showSpinner.value = false; }, 500);
            }
        };
        completeProgress();
    }
}, { immediate: true });

// ── Lifecycle ──────────────────────────────────────────────
onUnmounted(() => {
    clearAutoCloseTimer();
    if (intervalId.value) {
        clearInterval(intervalId.value as ReturnType<typeof setInterval>);
        intervalId.value = null;
    }
});
</script>


<style scoped>
/* ===== Transitions ===== */
.plm-fade-enter-active,
.plm-fade-leave-active {
  transition: opacity 0.3s ease;
}
.plm-fade-enter-from,
.plm-fade-leave-to {
  opacity: 0;
}

.plm-slide-enter-active {
  transition: opacity 0.35s ease, transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}
.plm-slide-leave-active {
  transition: opacity 0.2s ease, transform 0.2s ease;
}
.plm-slide-enter-from {
  opacity: 0;
  transform: translateY(20px) scale(0.97);
}
.plm-slide-leave-to {
  opacity: 0;
  transform: translateY(8px) scale(0.99);
}

/* ===== Overlay ===== */
.plm-overlay {
  position: fixed;
  inset: 0;
  background: rgba(30, 41, 59, 0.4);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  padding: 20px;
  box-sizing: border-box;
}

/* ===== Dialog ===== */
.plm-dialog {
  width: 100%;
  max-width: 380px;
  background: #fff;
  border-radius: 18px;
  overflow: hidden;
  box-shadow:
    0 0 0 1px rgba(148, 163, 184, 0.15),
    0 8px 24px -4px rgba(15, 23, 42, 0.12),
    0 32px 64px -16px rgba(15, 23, 42, 0.14);
}

/* ===== Header ===== */
.plm-dialog-header {
  background: linear-gradient(160deg, #f8fafc 0%, #f1f5f9 100%);
  border-bottom: 1px solid #e8edf3;
  padding: 18px 20px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.plm-header-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.plm-header-icon {
  width: 36px;
  height: 36px;
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

.plm-header-icon svg {
  width: 17px;
  height: 17px;
  color: var(--global-primary-color, #4f7ef8);
}

.plm-header-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.plm-header-title {
  color: #1e293b;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.1px;
  line-height: 1.3;
}

.plm-header-sub {
  color: #94a3b8;
  font-size: 11.5px;
}

.plm-header-pct {
  font-size: 20px;
  font-weight: 800;
  color: var(--global-primary-color, #4f7ef8);
  letter-spacing: -0.5px;
  min-width: 44px;
  text-align: right;
}

/* ===== Dialog Body ===== */
.plm-dialog-body {
  padding: 22px 20px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

/* ===== Card + progress center ===== */
.plm-center-wrap {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.plm-card-logo {
  width: 120px;
  height: 76px;
  position: relative;
  overflow: hidden;
  border-radius: 10px;
  background: #f8fafc;
  border: 1px solid #e8edf3;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.plm-card-logo img {
  width: 72%;
  object-fit: contain;
}

.plm-scan-line {
  position: absolute;
  top: 0;
  left: -10%;
  width: 8px;
  height: 100%;
  background: rgba(255, 255, 255, 0.85);
  box-shadow: 0 0 18px 10px rgba(255, 255, 255, 0.75);
  animation: plm-scan 2.2s ease-in-out infinite;
}

@keyframes plm-scan {
  0%   { left: -10%; }
  100% { left: 110%; }
}

/* ===== Progress ===== */
.plm-progress-section {
  width: 100%;
}

.plm-progress-track {
  width: 100%;
  height: 4px;
  background: #e8edf3;
  border-radius: 99px;
  overflow: hidden;
}

.plm-progress-fill {
  height: 100%;
  background: linear-gradient(90deg,
    var(--global-primary-color, #4f7ef8) 0%,
    #93c5fd 50%,
    var(--global-primary-color, #4f7ef8) 100%);
  background-size: 200% 100%;
  border-radius: 99px;
  transition: width 0.6s ease;
  animation: plm-shimmer 2.5s linear infinite;
}

@keyframes plm-shimmer {
  0%   { background-position: 200% center; }
  100% { background-position: -200% center; }
}

/* ===== Status message ===== */
.plm-status-msg {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  font-size: 12.5px;
  color: #64748b;
  min-height: 18px;
  text-align: center;
  letter-spacing: 0.1px;
}

.plm-dot-pulse {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--global-primary-color, #4f7ef8);
  flex-shrink: 0;
  animation: plm-pulse 1.6s ease-in-out infinite;
}

@keyframes plm-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.3; transform: scale(0.65); }
}

/* ===== Divider ===== */
.plm-divider {
  width: 100%;
  height: 1px;
  background: #f1f5f9;
}

/* ===== Security badges ===== */
.plm-badges {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  box-sizing: border-box;
}

.plm-badge {
  display: flex;
  align-items: center;
  gap: 4px;
  color: #94a3b8;
  font-size: 10.5px;
  font-weight: 500;
  white-space: nowrap;
  letter-spacing: 0.1px;
}

.plm-badge svg {
  width: 11px;
  height: 11px;
  fill: #86efac;
  flex-shrink: 0;
}

.plm-badge-sep {
  width: 1px;
  height: 10px;
  background: #e2e8f0;
  flex-shrink: 0;
}

/* ===== Transaction details ===== */
.plm-details {
  width: 100%;
  background: #f8fafc;
  border-radius: 12px;
  padding: 14px 16px;
  box-sizing: border-box;
  border: 1px solid #edf2f7;
}

.plm-details-title {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 10.5px;
  font-weight: 600;
  color: #94a3b8;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-bottom: 10px;
}

.plm-details-title svg {
  width: 12px;
  height: 12px;
  fill: #cbd5e1;
  flex-shrink: 0;
}

.plm-detail-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 0;
  font-size: 12.5px;
  border-bottom: 1px dashed #edf2f7;
}

.plm-detail-row:last-child {
  border-bottom: none;
  padding-bottom: 2px;
}

.plm-detail-label {
  color: #94a3b8;
  font-weight: 400;
}

.plm-detail-val {
  font-family: "SF Mono", ui-monospace, "Courier New", monospace;
  color: #475569;
  font-weight: 600;
  font-size: 11.5px;
  letter-spacing: 0.3px;
  max-width: 55%;
  text-align: right;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.plm-green {
  color: #22c55e;
}
</style>
   
