@extends('layouts.app')
@section('page-title', 'Change Requests')

@section('content')

<x-admin-hero-header
    title="Change Requests"
    subtitle="Review and respond to document change requests from users"
    eyebrow="Documents"
>
    <x-slot:icon>
        <svg class="h-6 w-6" fill="none" viewBox="0 0 24 24" stroke="currentColor">
            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="1.75"
                  d="M11 5H6a2 2 0 00-2 2v11a2 2 0 002 2h11a2 2 0 002-2v-5m-1.414-9.414a2 2 0 112.828 2.828L11.828 15H9v-2.828l8.586-8.586z"/>
        </svg>
    </x-slot:icon>
</x-admin-hero-header>

@if(session('success'))
    <div class="mb-5 rounded-2xl border border-emerald-200 bg-emerald-50 px-4 py-3 text-sm font-medium text-emerald-800">
        {{ session('success') }}
    </div>
@endif
@if(session('error'))
    <div class="mb-5 rounded-2xl border border-red-200 bg-red-50 px-4 py-3 text-sm font-medium text-red-800">
        {{ session('error') }}
    </div>
@endif

{{-- Page wrapper — holds filter + modal state --}}
<div x-data="{
    activeStatus: 'all',

    approve: { open: false, url: '', title: '', docNum: '', notes: '' },
    reject:  { open: false, url: '', title: '', docNum: '', notes: '' },
    desc:    { open: false, docTitle: '', requester: '', text: '' },

    openApprove(url, title, docNum) {
        this.approve = { open: true, url, title, docNum, notes: '' };
        document.body.classList.add('overflow-hidden');
    },
    closeApprove() {
        this.approve.open = false;
        document.body.classList.remove('overflow-hidden');
    },
    openReject(url, title, docNum) {
        this.reject = { open: true, url, title, docNum, notes: '' };
        document.body.classList.add('overflow-hidden');
    },
    closeReject() {
        this.reject.open = false;
        document.body.classList.remove('overflow-hidden');
    },
    openDesc(docTitle, requester, text) {
        this.desc = { open: true, docTitle, requester, text };
        document.body.classList.add('overflow-hidden');
    },
    closeDesc() {
        this.desc.open = false;
        document.body.classList.remove('overflow-hidden');
    },
}" @keydown.escape.window="
    if (approve.open) closeApprove();
    else if (reject.open) closeReject();
    else if (desc.open) closeDesc();
">

    {{-- ── Pill Tabs ── --}}
    <div class="mb-5 flex flex-wrap items-center gap-1.5 rounded-2xl border border-surface-100 bg-surface-50 p-1.5">
        @foreach([
            'all'      => ['label' => 'All',      'dot' => 'bg-surface-400',  'count' => $counts['all']],
            'pending'  => ['label' => 'Pending',   'dot' => 'bg-amber-400',    'count' => $counts['pending']],
            'approved' => ['label' => 'Approved',  'dot' => 'bg-emerald-500',  'count' => $counts['approved']],
            'rejected' => ['label' => 'Rejected',  'dot' => 'bg-red-500',      'count' => $counts['rejected']],
        ] as $key => $tab)
            <button type="button"
                    @click="activeStatus = '{{ $key }}'"
                    class="flex items-center gap-2 rounded-xl px-3.5 py-2 text-sm font-semibold transition-all duration-150"
                    :class="activeStatus === '{{ $key }}'
                        ? 'bg-white shadow-sm border border-surface-200 text-surface-900'
                        : 'text-surface-500 hover:text-surface-800'">
                <span class="h-2 w-2 shrink-0 rounded-full {{ $tab['dot'] }}"
                      :class="activeStatus === '{{ $key }}' ? 'opacity-100' : 'opacity-60'"></span>
                {{ $tab['label'] }}
                <span class="rounded-full px-1.5 py-0.5 text-[10px] font-bold transition-colors"
                      :class="activeStatus === '{{ $key }}'
                          ? 'bg-primary-100 text-primary-700'
                          : 'bg-surface-200 text-surface-500'">
                    {{ $tab['count'] }}
                </span>
            </button>
        @endforeach
    </div>

    {{-- ── Table ── --}}
    <div class="card overflow-hidden">
        @if($requests->isEmpty())
            <div class="empty-state py-16">
                <div class="empty-state-icon">
                    <svg class="h-6 w-6" fill="none" viewBox="0 0 24 24" stroke="currentColor">
                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="1.5"
                              d="M9 12l2 2 4-4m6 2a9 9 0 11-18 0 9 9 0 0118 0z"/>
                    </svg>
                </div>
                <p class="font-semibold text-surface-500">No change requests yet</p>
            </div>
        @else
            <table class="w-full">
                <thead>
                    <tr class="border-b border-surface-100">
                        <th class="table-th w-[22%]">Document</th>
                        <th class="table-th w-[15%]">Requested By</th>
                        <th class="table-th">Description</th>
                        <th class="table-th w-[105px]">Status</th>
                        <th class="table-th w-[115px]">Submitted</th>
                        <th class="table-th w-[150px] pr-6 text-right">Actions</th>
                    </tr>
                </thead>
                <tbody class="divide-y divide-surface-50">
                    @foreach($requests as $req)
                        @php
                            $statusStyle = match($req->status) {
                                'approved' => 'bg-emerald-50 text-emerald-700',
                                'rejected' => 'bg-red-50 text-red-700',
                                default    => 'bg-amber-50 text-amber-700',
                            };
                            $approveUrl = route('admin.change-requests.approve', $req);
                            $rejectUrl  = route('admin.change-requests.reject', $req);
                        @endphp

                        <tr x-show="activeStatus === 'all' || activeStatus === '{{ $req->status }}'"
                            class="table-row-hover border-b border-surface-50 last:border-0">

                            {{-- Document --}}
                            <td class="table-td">
                                <p class="font-semibold text-surface-900">{{ $req->document->title }}</p>
                                @if($req->document->doc_number)
                                    <p class="mt-0.5 font-mono text-xs font-bold text-surface-600">{{ $req->document->doc_number }}</p>
                                @endif
                                <p class="mt-0.5 text-xs text-surface-400">{{ $req->document->folder?->name }}</p>
                            </td>

                            {{-- Requested by --}}
                            <td class="table-td">
                                <p class="font-semibold text-surface-900">{{ $req->requester->full_name }}</p>
                                <p class="mt-0.5 text-xs text-surface-400">{{ $req->requester->designation }}</p>
                            </td>

                            {{-- Description --}}
                            <td class="table-td max-w-[240px]">
                                @if(mb_strlen($req->description) > 120)
                                    <button type="button"
                                            @click="openDesc(@js($req->document->title), @js($req->requester->full_name), @js($req->description))"
                                            class="group text-left">
                                        <p class="text-sm text-surface-700 line-clamp-2">{{ $req->description }}</p>
                                        <span class="mt-1 inline-block text-[11px] font-semibold text-primary-500 transition-colors group-hover:text-primary-700">
                                            Read more →
                                        </span>
                                    </button>
                                @else
                                    <p class="text-sm text-surface-700">{{ $req->description }}</p>
                                @endif
                                @if($req->admin_notes)
                                    <p class="mt-2 line-clamp-1 text-xs italic text-surface-400">Note: {{ $req->admin_notes }}</p>
                                @endif
                            </td>

                            {{-- Status --}}
                            <td class="table-td">
                                <span class="inline-flex rounded-full px-2.5 py-1 text-xs font-semibold {{ $statusStyle }}">
                                    {{ \App\Models\ChangeRequest::STATUSES[$req->status] }}
                                </span>
                                @if($req->reviewed_at)
                                    <p class="mt-1 text-xs text-surface-400">{{ $req->reviewed_at->format('d M Y') }}</p>
                                @endif
                            </td>

                            {{-- Submitted --}}
                            <td class="table-td">
                                <p class="text-sm text-surface-700">{{ $req->created_at->format('d M Y') }}</p>
                                <p class="mt-0.5 text-xs text-surface-400">{{ $req->created_at->diffForHumans() }}</p>
                            </td>

                            {{-- Actions --}}
                            <td class="table-td pr-6 text-right">
                                @if($req->isPending())
                                    <div class="inline-flex items-center gap-2">
                                        <button type="button"
                                                @click="openApprove(@js($approveUrl), @js($req->document->title), @js($req->document->doc_number))"
                                                class="inline-flex items-center gap-1.5 rounded-lg border border-emerald-200 bg-emerald-50 px-3 py-1.5 text-xs font-semibold text-emerald-700 shadow-sm transition-all hover:border-emerald-300 hover:bg-emerald-100 hover:shadow-none">
                                            <span class="h-1.5 w-1.5 rounded-full bg-emerald-500"></span>
                                            Approve
                                        </button>
                                        <button type="button"
                                                @click="openReject(@js($rejectUrl), @js($req->document->title), @js($req->document->doc_number))"
                                                class="inline-flex items-center gap-1.5 rounded-lg border border-red-200 bg-red-50 px-3 py-1.5 text-xs font-semibold text-red-700 shadow-sm transition-all hover:border-red-300 hover:bg-red-100 hover:shadow-none">
                                            <span class="h-1.5 w-1.5 rounded-full bg-red-500"></span>
                                            Reject
                                        </button>
                                    </div>
                                @else
                                    <p class="text-xs font-medium text-surface-600">{{ $req->reviewer?->full_name ?? '—' }}</p>
                                    <p class="mt-0.5 text-[11px] text-surface-400">Reviewed</p>
                                @endif
                            </td>
                        </tr>
                    @endforeach
                </tbody>
            </table>
        @endif
    </div>

    {{-- ── Approve Modal ── --}}
    <template x-teleport="body">
        <div x-show="approve.open"
             x-transition:enter="ease-out duration-200" x-transition:enter-start="opacity-0" x-transition:enter-end="opacity-100"
             x-transition:leave="ease-in duration-150" x-transition:leave-start="opacity-100" x-transition:leave-end="opacity-0"
             class="fixed inset-0 z-[70] flex items-end justify-center p-4 sm:items-center" style="display:none;">
            <div class="absolute inset-0 bg-surface-900/50 backdrop-blur-sm" @click="closeApprove()"></div>
            <div x-show="approve.open"
                 x-transition:enter="ease-out duration-200" x-transition:enter-start="opacity-0 scale-95 translate-y-2" x-transition:enter-end="opacity-100 scale-100 translate-y-0"
                 x-transition:leave="ease-in duration-150" x-transition:leave-start="opacity-100 scale-100 translate-y-0" x-transition:leave-end="opacity-0 scale-95 translate-y-2"
                 class="relative z-10 w-full max-w-lg rounded-2xl border border-surface-100 bg-white shadow-soft-lg" role="dialog" aria-modal="true">
                <div class="flex items-start gap-4 border-b border-surface-100 px-6 py-5">
                    <div class="flex h-10 w-10 shrink-0 items-center justify-center rounded-xl bg-emerald-100">
                        <svg class="h-5 w-5 text-emerald-600" fill="none" viewBox="0 0 24 24" stroke="currentColor" stroke-width="2">
                            <path stroke-linecap="round" stroke-linejoin="round" d="M5 13l4 4L19 7"/>
                        </svg>
                    </div>
                    <div class="min-w-0 flex-1">
                        <h3 class="font-display text-base font-semibold text-surface-900">Approve Change Request</h3>
                        <p class="mt-0.5 truncate text-sm text-surface-500" x-text="approve.title"></p>
                        <p class="font-mono text-xs text-surface-400" x-show="approve.docNum" x-text="approve.docNum"></p>
                    </div>
                    <button type="button" @click="closeApprove()"
                            class="flex h-8 w-8 shrink-0 items-center justify-center rounded-xl text-surface-400 transition-colors hover:bg-surface-100 hover:text-surface-600">
                        <svg class="h-4 w-4" fill="none" viewBox="0 0 24 24" stroke="currentColor" stroke-width="2"><path stroke-linecap="round" stroke-linejoin="round" d="M6 18L18 6M6 6l12 12"/></svg>
                    </button>
                </div>
                <form :action="approve.url" method="POST">
                    @csrf @method('PATCH')
                    <div class="px-6 py-5">
                        <p class="text-sm text-surface-600">This request will be marked as <span class="font-semibold text-emerald-700">Approved</span> and the requester will be notified.</p>
                        <div class="mt-4">
                            <label class="form-label">Note for requester <span class="font-normal text-surface-400">(optional)</span></label>
                            <textarea x-model="approve.notes" name="admin_notes" rows="3"
                                      placeholder="Add any comments or context for the requester..."
                                      class="form-input mt-1 resize-none"></textarea>
                        </div>
                    </div>
                    <div class="flex items-center justify-end gap-3 rounded-b-2xl border-t border-surface-100 bg-surface-50 px-6 py-4">
                        <button type="button" @click="closeApprove()" class="rounded-xl border border-surface-200 px-4 py-2 text-sm font-semibold text-surface-700 transition-colors hover:bg-surface-100">Cancel</button>
                        <button type="submit" class="rounded-xl bg-emerald-600 px-5 py-2 text-sm font-semibold text-white shadow-sm transition-colors hover:bg-emerald-700">Confirm Approve</button>
                    </div>
                </form>
            </div>
        </div>
    </template>

    {{-- ── Reject Modal ── --}}
    <template x-teleport="body">
        <div x-show="reject.open"
             x-transition:enter="ease-out duration-200" x-transition:enter-start="opacity-0" x-transition:enter-end="opacity-100"
             x-transition:leave="ease-in duration-150" x-transition:leave-start="opacity-100" x-transition:leave-end="opacity-0"
             class="fixed inset-0 z-[70] flex items-end justify-center p-4 sm:items-center" style="display:none;">
            <div class="absolute inset-0 bg-surface-900/50 backdrop-blur-sm" @click="closeReject()"></div>
            <div x-show="reject.open"
                 x-transition:enter="ease-out duration-200" x-transition:enter-start="opacity-0 scale-95 translate-y-2" x-transition:enter-end="opacity-100 scale-100 translate-y-0"
                 x-transition:leave="ease-in duration-150" x-transition:leave-start="opacity-100 scale-100 translate-y-0" x-transition:leave-end="opacity-0 scale-95 translate-y-2"
                 class="relative z-10 w-full max-w-lg rounded-2xl border border-surface-100 bg-white shadow-soft-lg" role="dialog" aria-modal="true">
                <div class="flex items-start gap-4 border-b border-surface-100 px-6 py-5">
                    <div class="flex h-10 w-10 shrink-0 items-center justify-center rounded-xl bg-red-100">
                        <svg class="h-5 w-5 text-red-600" fill="none" viewBox="0 0 24 24" stroke="currentColor" stroke-width="2">
                            <path stroke-linecap="round" stroke-linejoin="round" d="M6 18L18 6M6 6l12 12"/>
                        </svg>
                    </div>
                    <div class="min-w-0 flex-1">
                        <h3 class="font-display text-base font-semibold text-surface-900">Reject Change Request</h3>
                        <p class="mt-0.5 truncate text-sm text-surface-500" x-text="reject.title"></p>
                        <p class="font-mono text-xs text-surface-400" x-show="reject.docNum" x-text="reject.docNum"></p>
                    </div>
                    <button type="button" @click="closeReject()"
                            class="flex h-8 w-8 shrink-0 items-center justify-center rounded-xl text-surface-400 transition-colors hover:bg-surface-100 hover:text-surface-600">
                        <svg class="h-4 w-4" fill="none" viewBox="0 0 24 24" stroke="currentColor" stroke-width="2"><path stroke-linecap="round" stroke-linejoin="round" d="M6 18L18 6M6 6l12 12"/></svg>
                    </button>
                </div>
                <form :action="reject.url" method="POST">
                    @csrf @method('PATCH')
                    <div class="px-6 py-5">
                        <p class="text-sm text-surface-600">This request will be marked as <span class="font-semibold text-red-700">Rejected</span> and the requester will be notified.</p>
                        <div class="mt-4">
                            <label class="form-label">Reason for rejection <span class="font-normal text-surface-400">(optional)</span></label>
                            <textarea x-model="reject.notes" name="admin_notes" rows="3"
                                      placeholder="Explain why this request is being rejected..."
                                      class="form-input mt-1 resize-none"></textarea>
                        </div>
                    </div>
                    <div class="flex items-center justify-end gap-3 rounded-b-2xl border-t border-surface-100 bg-surface-50 px-6 py-4">
                        <button type="button" @click="closeReject()" class="rounded-xl border border-surface-200 px-4 py-2 text-sm font-semibold text-surface-700 transition-colors hover:bg-surface-100">Cancel</button>
                        <button type="submit" class="rounded-xl bg-red-600 px-5 py-2 text-sm font-semibold text-white shadow-sm transition-colors hover:bg-red-700">Confirm Reject</button>
                    </div>
                </form>
            </div>
        </div>
    </template>

    {{-- ── Description Modal ── --}}
    <template x-teleport="body">
        <div x-show="desc.open"
             x-transition:enter="ease-out duration-200" x-transition:enter-start="opacity-0" x-transition:enter-end="opacity-100"
             x-transition:leave="ease-in duration-150" x-transition:leave-start="opacity-100" x-transition:leave-end="opacity-0"
             class="fixed inset-0 z-[70] flex items-end justify-center p-4 sm:items-center" style="display:none;">
            <div class="absolute inset-0 bg-surface-900/50 backdrop-blur-sm" @click="closeDesc()"></div>
            <div x-show="desc.open"
                 x-transition:enter="ease-out duration-200" x-transition:enter-start="opacity-0 scale-95 translate-y-2" x-transition:enter-end="opacity-100 scale-100 translate-y-0"
                 x-transition:leave="ease-in duration-150" x-transition:leave-start="opacity-100 scale-100 translate-y-0" x-transition:leave-end="opacity-0 scale-95 translate-y-2"
                 class="relative z-10 w-full max-w-lg rounded-2xl border border-surface-100 bg-white shadow-soft-lg" role="dialog" aria-modal="true">
                <div class="flex items-start gap-4 border-b border-surface-100 px-6 py-5">
                    <div class="flex h-10 w-10 shrink-0 items-center justify-center rounded-xl bg-surface-100">
                        <svg class="h-5 w-5 text-surface-500" fill="none" viewBox="0 0 24 24" stroke="currentColor" stroke-width="1.75">
                            <path stroke-linecap="round" stroke-linejoin="round" d="M9 12h6m-6 4h6m2 5H7a2 2 0 01-2-2V5a2 2 0 012-2h5.586a1 1 0 01.707.293l5.414 5.414a1 1 0 01.293.707V19a2 2 0 01-2 2z"/>
                        </svg>
                    </div>
                    <div class="min-w-0 flex-1">
                        <h3 class="font-display text-base font-semibold text-surface-900" x-text="desc.docTitle"></h3>
                        <p class="mt-0.5 text-sm text-surface-400">Change request by <span class="font-medium text-surface-600" x-text="desc.requester"></span></p>
                    </div>
                    <button type="button" @click="closeDesc()"
                            class="flex h-8 w-8 shrink-0 items-center justify-center rounded-xl text-surface-400 transition-colors hover:bg-surface-100 hover:text-surface-600">
                        <svg class="h-4 w-4" fill="none" viewBox="0 0 24 24" stroke="currentColor" stroke-width="2"><path stroke-linecap="round" stroke-linejoin="round" d="M6 18L18 6M6 6l12 12"/></svg>
                    </button>
                </div>
                <div class="max-h-[60vh] overflow-y-auto px-6 py-5">
                    <p class="whitespace-pre-wrap text-sm leading-relaxed text-surface-700" x-text="desc.text"></p>
                </div>
                <div class="rounded-b-2xl border-t border-surface-100 bg-surface-50 px-6 py-4 text-right">
                    <button type="button" @click="closeDesc()" class="rounded-xl border border-surface-200 px-4 py-2 text-sm font-semibold text-surface-700 transition-colors hover:bg-surface-100">Close</button>
                </div>
            </div>
        </div>
    </template>

</div>{{-- end page wrapper --}}

@endsection