package com.example.ui.screens

import androidx.compose.foundation.background
import androidx.compose.foundation.border
import androidx.compose.foundation.layout.*
import androidx.compose.foundation.rememberScrollState
import androidx.compose.foundation.shape.CircleShape
import androidx.compose.foundation.shape.RoundedCornerShape
import androidx.compose.foundation.verticalScroll
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.*
import androidx.compose.material.icons.outlined.*
import androidx.compose.material3.*
import androidx.compose.runtime.*
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.draw.clip
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.graphics.vector.ImageVector
import androidx.compose.ui.platform.testTag
import androidx.compose.ui.text.font.FontWeight
import androidx.compose.ui.unit.dp
import androidx.compose.ui.unit.sp
import com.example.data.model.*
import com.example.ui.components.RiskScoreMeter
import com.example.ui.components.VerificationBadge
import com.example.ui.theme.*
import com.example.ui.util.Localization

@Composable
fun CompanyProfileScreen(
    company: Company?,
    lang: AppLanguage,
    onBack: () -> Unit,
    onReportCompany: (String) -> Unit,
    modifier: Modifier = Modifier
) {
    if (company == null) {
        Box(
            modifier = modifier.fillMaxSize(),
            contentAlignment = Alignment.Center
        ) {
            Text(if (lang == AppLanguage.BN) "কোম্পানির তথ্য পাওয়া যায়নি" else "Company profile not found")
        }
        return
    }

    var selectedTab by remember { mutableStateOf(0) } // 0: Overview & Reg, 1: Contact & Owner, 2: Complaints & Evidence

    Scaffold(
        containerColor = MaterialTheme.colorScheme.background,
        bottomBar = {
            Surface(
                color = MaterialTheme.colorScheme.surface,
                tonalElevation = 8.dp,
                border = androidx.compose.foundation.BorderStroke(1.dp, LightOutline),
                modifier = Modifier.fillMaxWidth()
            ) {
                Row(
                    modifier = Modifier
                        .fillMaxWidth()
                        .padding(16.dp)
                        .navigationBarsPadding(),
                    horizontalArrangement = Arrangement.spacedBy(12.dp)
                ) {
                    OutlinedButton(
                        onClick = onBack,
                        shape = RoundedCornerShape(12.dp),
                        modifier = Modifier
                            .weight(1f)
                            .height(48.dp)
                    ) {
                        Text(if (lang == AppLanguage.BN) "ফিরে যান" else "Back")
                    }

                    Button(
                        onClick = { onReportCompany(company.nameEn) },
                        colors = ButtonDefaults.buttonColors(
                            containerColor = if (company.status == VerificationStatus.VERIFIED_SAFE) BrandNavyPrimary else StatusWarningRed
                        ),
                        shape = RoundedCornerShape(12.dp),
                        modifier = Modifier
                            .weight(1.5f)
                            .height(48.dp)
                            .testTag("btn_report_company_profile")
                    ) {
                        Icon(
                            imageVector = Icons.Default.ReportProblem,
                            contentDescription = null,
                            modifier = Modifier.size(18.dp)
                        )
                        Spacer(modifier = Modifier.width(6.dp))
                        Text(
                            text = if (lang == AppLanguage.BN) "অভিযোগ দিন" else "Lodge Complaint",
                            fontWeight = FontWeight.Bold
                        )
                    }
                }
            }
        },
        modifier = modifier.fillMaxSize()
    ) { innerPadding ->
        Column(
            modifier = Modifier
                .fillMaxSize()
                .padding(innerPadding)
                .verticalScroll(rememberScrollState())
        ) {
            // Top Header Card
            Surface(
                color = MaterialTheme.colorScheme.surface,
                tonalElevation = 2.dp,
                modifier = Modifier.fillMaxWidth()
            ) {
                Column(modifier = Modifier.padding(16.dp)) {
                    Row(
                        modifier = Modifier.fillMaxWidth(),
                        verticalAlignment = Alignment.CenterVertically
                    ) {
                        Box(
                            modifier = Modifier
                                .size(56.dp)
                                .clip(RoundedCornerShape(14.dp))
                                .background(
                                    if (company.status == VerificationStatus.VERIFIED_SAFE) StatusVerifiedGreenBg
                                    else StatusWarningRedBg
                                ),
                            contentAlignment = Alignment.Center
                        ) {
                            Icon(
                                imageVector = if (company.status == VerificationStatus.VERIFIED_SAFE) Icons.Default.Verified
                                else Icons.Default.Warning,
                                contentDescription = null,
                                tint = if (company.status == VerificationStatus.VERIFIED_SAFE) StatusVerifiedGreen else StatusWarningRed,
                                modifier = Modifier.size(32.dp)
                            )
                        }

                        Spacer(modifier = Modifier.width(14.dp))

                        Column(modifier = Modifier.weight(1f)) {
                            Text(
                                text = if (lang == AppLanguage.BN) company.nameBn else company.nameEn,
                                style = MaterialTheme.typography.titleLarge.copy(
                                    fontWeight = FontWeight.Bold,
                                    fontSize = 19.sp,
                                    color = MaterialTheme.colorScheme.onSurface
                                )
                            )
                            Spacer(modifier = Modifier.height(2.dp))
                            Text(
                                text = "${company.category} • ${company.city}",
                                style = MaterialTheme.typography.bodyMedium.copy(
                                    color = LightTextSecondary,
                                    fontSize = 13.sp
                                )
                            )
                        }
                    }

                    Spacer(modifier = Modifier.height(14.dp))

                    Row(
                        modifier = Modifier.fillMaxWidth(),
                        horizontalArrangement = Arrangement.SpaceBetween,
                        verticalAlignment = Alignment.CenterVertically
                    ) {
                        VerificationBadge(status = company.status, lang = lang)
                        Text(
                            text = company.verifiedBadgeTitle,
                            style = MaterialTheme.typography.labelSmall.copy(
                                color = BrandNavyPrimary,
                                fontWeight = FontWeight.SemiBold
                            )
                        )
                    }

                    Spacer(modifier = Modifier.height(16.dp))

                    // Risk Score Meter Component
                    RiskScoreMeter(score = company.riskScore, lang = lang)
                }
            }

            // Warning Banner if applicable
            if (company.warningNoticeEn != null || company.warningNoticeBn != null) {
                Surface(
                    color = StatusWarningRedBg,
                    border = androidx.compose.foundation.BorderStroke(1.dp, StatusWarningRed.copy(alpha = 0.4f)),
                    shape = RoundedCornerShape(12.dp),
                    modifier = Modifier
                        .fillMaxWidth()
                        .padding(16.dp)
                ) {
                    Row(
                        modifier = Modifier.padding(12.dp),
                        verticalAlignment = Alignment.Top
                    ) {
                        Icon(
                            imageVector = Icons.Default.Dangerous,
                            contentDescription = null,
                            tint = StatusWarningRed,
                            modifier = Modifier.size(24.dp)
                        )
                        Spacer(modifier = Modifier.width(10.dp))
                        Column {
                            Text(
                                text = if (lang == AppLanguage.BN) "সরকারি সাইবার পুলিশ ও গোয়েন্দা সতর্কতা" else "Official Cyber Security Warning",
                                style = MaterialTheme.typography.titleSmall.copy(
                                    fontWeight = FontWeight.Bold,
                                    color = StatusWarningRed
                                )
                            )
                            Spacer(modifier = Modifier.height(4.dp))
                            Text(
                                text = (if (lang == AppLanguage.BN) company.warningNoticeBn else company.warningNoticeEn) ?: "",
                                style = MaterialTheme.typography.bodySmall.copy(
                                    color = Color(0xFF7F1D1D),
                                    lineHeight = 17.sp
                                )
                            )
                        }
                    }
                }
            }

            // Navigation Tabs
            TabRow(
                selectedTabIndex = selectedTab,
                containerColor = MaterialTheme.colorScheme.surface,
                contentColor = BrandNavyPrimary,
                modifier = Modifier.padding(top = 8.dp)
            ) {
                Tab(
                    selected = selectedTab == 0,
                    onClick = { selectedTab = 0 },
                    text = { Text(if (lang == AppLanguage.BN) "রেজিস্ট্রেশন ও বিবরণ" else "Registration & Bio") }
                )
                Tab(
                    selected = selectedTab == 1,
                    onClick = { selectedTab = 1 },
                    text = { Text(if (lang == AppLanguage.BN) "মালিক ও যোগাযোগ" else "Owners & Contact") }
                )
                Tab(
                    selected = selectedTab == 2,
                    onClick = { selectedTab = 2 },
                    text = { Text(if (lang == AppLanguage.BN) "অভিযোগ (${company.complaintCount})" else "Complaints (${company.complaintCount})") }
                )
            }

            // Tab Content
            when (selectedTab) {
                0 -> {
                    // Registration & Legal Info
                    Column(
                        modifier = Modifier
                            .fillMaxWidth()
                            .padding(16.dp),
                        verticalArrangement = Arrangement.spacedBy(12.dp)
                    ) {
                        InfoCardItem(
                            title = if (lang == AppLanguage.BN) "কোম্পানি সারসংক্ষেপ" else "Company Summary",
                            value = if (lang == AppLanguage.BN) company.summaryBn else company.summaryEn,
                            icon = Icons.Default.Description
                        )

                        InfoRowCard(
                            label = "RJSC Registration No",
                            value = company.rjscRegNo,
                            icon = Icons.Default.Badge
                        )

                        InfoRowCard(
                            label = "Trade License Number",
                            value = company.tradeLicenseNo,
                            icon = Icons.Default.FactCheck
                        )

                        InfoRowCard(
                            label = "TIN / BIN Number",
                            value = "TIN: ${company.tinNo}\nBIN: ${company.binNo}",
                            icon = Icons.Default.Receipt
                        )

                        InfoRowCard(
                            label = if (lang == AppLanguage.BN) "প্রতিষ্ঠার তারিখ" else "Incorporation Date",
                            value = company.incorporationDate,
                            icon = Icons.Default.Event
                        )

                        InfoRowCard(
                            label = if (lang == AppLanguage.BN) "নিবন্ধিত ঠিকানা" else "Registered Address",
                            value = "${company.address}, ${company.city}",
                            icon = Icons.Default.LocationOn
                        )
                    }
                }
                1 -> {
                    // Owner & Contact
                    Column(
                        modifier = Modifier
                            .fillMaxWidth()
                            .padding(16.dp),
                        verticalArrangement = Arrangement.spacedBy(12.dp)
                    ) {
                        Surface(
                            color = MaterialTheme.colorScheme.surface,
                            shape = RoundedCornerShape(12.dp),
                            border = androidx.compose.foundation.BorderStroke(1.dp, LightOutline),
                            modifier = Modifier.fillMaxWidth()
                        ) {
                            Column(modifier = Modifier.padding(14.dp)) {
                                Text(
                                    text = if (lang == AppLanguage.BN) "মালিক / ব্যবস্থাপনা পরিচালক" else "Managing Director / Ownership",
                                    style = MaterialTheme.typography.labelMedium.copy(color = LightTextMuted)
                                )
                                Spacer(modifier = Modifier.height(4.dp))
                                Row(
                                    verticalAlignment = Alignment.CenterVertically,
                                    horizontalArrangement = Arrangement.SpaceBetween,
                                    modifier = Modifier.fillMaxWidth()
                                ) {
                                    Text(
                                        text = company.managingDirector,
                                        style = MaterialTheme.typography.titleMedium.copy(fontWeight = FontWeight.Bold)
                                    )
                                    if (company.directorNidVerified) {
                                        Surface(
                                            color = StatusVerifiedGreenBg,
                                            shape = RoundedCornerShape(6.dp)
                                        ) {
                                            Text(
                                                text = "✓ NID Verified",
                                                color = StatusVerifiedGreen,
                                                style = MaterialTheme.typography.labelSmall.copy(fontWeight = FontWeight.Bold),
                                                modifier = Modifier.padding(horizontal = 6.dp, vertical = 2.dp)
                                            )
                                        }
                                    }
                                }
                            }
                        }

                        InfoRowCard(
                            label = if (lang == AppLanguage.BN) "যোগাযোগের ফোন নম্বর" else "Contact Phone",
                            value = company.phone,
                            icon = Icons.Default.Phone
                        )

                        InfoRowCard(
                            label = if (lang == AppLanguage.BN) "ইমেইল অ্যাড্রেস" else "Official Email",
                            value = company.email,
                            icon = Icons.Default.Email
                        )

                        InfoRowCard(
                            label = if (lang == AppLanguage.BN) "বিকাশ মার্চেন্ট / পেমেন্ট নম্বর" else "bKash / Nagad Wallet",
                            value = company.bkashMerchantNo.ifBlank { "Not provided" },
                            icon = Icons.Default.AccountBalanceWallet
                        )

                        InfoRowCard(
                            label = if (lang == AppLanguage.BN) "অফিসিয়াল ওয়েবসাইট ও পেজ" else "Official Website & Page",
                            value = "${company.website}\n${company.facebookPage}",
                            icon = Icons.Default.Language
                        )
                    }
                }
                2 -> {
                    // Complaints & Evidence History
                    Column(
                        modifier = Modifier
                            .fillMaxWidth()
                            .padding(16.dp),
                        verticalArrangement = Arrangement.spacedBy(12.dp)
                    ) {
                        Surface(
                            color = if (company.complaintCount == 0) StatusVerifiedGreenBg else StatusWarningRedBg,
                            shape = RoundedCornerShape(12.dp),
                            modifier = Modifier.fillMaxWidth()
                        ) {
                            Row(
                                modifier = Modifier.padding(14.dp),
                                verticalAlignment = Alignment.CenterVertically
                            ) {
                                Icon(
                                    imageVector = if (company.complaintCount == 0) Icons.Default.CheckCircle else Icons.Default.Report,
                                    contentDescription = null,
                                    tint = if (company.complaintCount == 0) StatusVerifiedGreen else StatusWarningRed,
                                    modifier = Modifier.size(24.dp)
                                )
                                Spacer(modifier = Modifier.width(10.dp))
                                Text(
                                    text = if (company.complaintCount == 0) {
                                        if (lang == AppLanguage.BN) "এই প্রতিষ্ঠানের বিরুদ্ধে কোনো প্রতারণার রেকর্ড নেই" else "Zero active scam reports lodged against this entity"
                                    } else {
                                        if (lang == AppLanguage.BN) "মোট ${company.complaintCount} টি নথিভুক্ত নাগরিক অভিযোগ রয়েছে" else "Total ${company.complaintCount} verified citizen complaints on record"
                                    },
                                    style = MaterialTheme.typography.bodyMedium.copy(
                                        fontWeight = FontWeight.SemiBold,
                                        color = if (company.complaintCount == 0) Color(0xFF14532D) else Color(0xFF7F1D1D)
                                    )
                                )
                            }
                        }

                        if (company.complaintCount > 0) {
                            Text(
                                text = if (lang == AppLanguage.BN) "সংযুক্ত প্রমাণের ধরন:" else "Attached Proof Types:",
                                style = MaterialTheme.typography.titleSmall.copy(fontWeight = FontWeight.Bold)
                            )

                            listOf(
                                "📱 bKash Transaction SMS Receipts (Verified)",
                                "💬 WhatsApp & Messenger Extortion Chats",
                                "📄 Counterfeit Embassy Offer Letter with Fake Seal",
                                "🚨 Gulshan Police Thana GD Copy #981/2026"
                            ).forEach { proof ->
                                Surface(
                                    color = MaterialTheme.colorScheme.surface,
                                    shape = RoundedCornerShape(8.dp),
                                    border = androidx.compose.foundation.BorderStroke(1.dp, LightOutline),
                                    modifier = Modifier.fillMaxWidth()
                                ) {
                                    Text(
                                        text = proof,
                                        style = MaterialTheme.typography.bodyMedium.copy(color = MaterialTheme.colorScheme.onSurface),
                                        modifier = Modifier.padding(12.dp)
                                    )
                                }
                            }
                        }
                    }
                }
            }

            Spacer(modifier = Modifier.height(24.dp))
        }
    }
}

@Composable
fun InfoCardItem(
    title: String,
    value: String,
    icon: ImageVector
) {
    Surface(
        color = MaterialTheme.colorScheme.surface,
        shape = RoundedCornerShape(12.dp),
        border = androidx.compose.foundation.BorderStroke(1.dp, LightOutline),
        modifier = Modifier.fillMaxWidth()
    ) {
        Column(modifier = Modifier.padding(14.dp)) {
            Row(verticalAlignment = Alignment.CenterVertically) {
                Icon(
                    imageVector = icon,
                    contentDescription = null,
                    tint = BrandNavyPrimary,
                    modifier = Modifier.size(18.dp)
                )
                Spacer(modifier = Modifier.width(8.dp))
                Text(
                    text = title,
                    style = MaterialTheme.typography.labelMedium.copy(
                        color = LightTextMuted,
                        fontWeight = FontWeight.SemiBold
                    )
                )
            }
            Spacer(modifier = Modifier.height(6.dp))
            Text(
                text = value,
                style = MaterialTheme.typography.bodyMedium.copy(
                    color = MaterialTheme.colorScheme.onSurface,
                    lineHeight = 20.sp
                )
            )
        }
    }
}

@Composable
fun InfoRowCard(
    label: String,
    value: String,
    icon: ImageVector
) {
    Surface(
        color = MaterialTheme.colorScheme.surface,
        shape = RoundedCornerShape(12.dp),
        border = androidx.compose.foundation.BorderStroke(1.dp, LightOutline),
        modifier = Modifier.fillMaxWidth()
    ) {
        Row(
            modifier = Modifier
                .fillMaxWidth()
                .padding(14.dp),
            verticalAlignment = Alignment.CenterVertically
        ) {
            Box(
                modifier = Modifier
                    .size(36.dp)
                    .clip(RoundedCornerShape(8.dp))
                    .background(LightSurfaceVariant),
                contentAlignment = Alignment.Center
            ) {
                Icon(
                    imageVector = icon,
                    contentDescription = null,
                    tint = BrandNavyPrimary,
                    modifier = Modifier.size(20.dp)
                )
            }
            Spacer(modifier = Modifier.width(12.dp))
            Column(modifier = Modifier.weight(1f)) {
                Text(
                    text = label,
                    style = MaterialTheme.typography.labelSmall.copy(
                        color = LightTextMuted,
                        fontSize = 11.sp
                    )
                )
                Spacer(modifier = Modifier.height(2.dp))
                Text(
                    text = value,
                    style = MaterialTheme.typography.bodyMedium.copy(
                        fontWeight = FontWeight.SemiBold,
                        color = MaterialTheme.colorScheme.onSurface
                    )
                )
            }
        }
    }
}