@extends('layouts.app')
@section('title','Requisition')
@section('page-title','Requisition Detail')
@section('content')

@php $meta = $requisition->status_meta; @endphp

<div class="d-flex justify-content-between align-items-center mb-3">
  <a href="{{ route('requisitions.index') }}" class="btn btn-sm btn-outline-secondary"><i class="bi bi-arrow-left me-1"></i>All Requisitions</a>
  <span class="badge bg-{{ $meta['color'] }} fs-6 px-3 py-2"><i class="bi bi-{{ $meta['icon'] }} me-1"></i>{{ $meta['label'] }}</span>
</div>

{{-- Header Summary --}}
<div class="card stat-card mb-3">
  <div class="card-body">
    <div class="row g-3">
      <div class="col-md-2 text-center">
        <div class="fs-1 text-primary"><i class="bi bi-{{ $requisition->type==='material'?'box-seam':'tools' }}"></i></div>
        <div class="badge bg-{{ $requisition->type==='material'?'info':'secondary' }} mt-1">{{ strtoupper($requisition->type) }}</div>
      </div>
      <div class="col-md-5">
        <div class="fw-bold fs-5">{{ $requisition->item_description }}</div>
        <div class="text-muted small mb-2">{{ $requisition->req_number }} · {{ $requisition->project->name }}</div>
        <div class="d-flex gap-3 small">
          <span><i class="bi bi-123 me-1 text-muted"></i><strong>{{ $requisition->quantity }} {{ $requisition->unit }}</strong></span>
          <span><span class="badge bg-{{ $requisition->urgency==='critical'?'danger':($requisition->urgency==='high'?'warning text-dark':'secondary') }}">{{ $requisition->urgency }}</span></span>
        </div>
        @if($requisition->purpose)<div class="small text-muted mt-1"><i class="bi bi-chat-text me-1"></i>{{ $requisition->purpose }}</div>@endif
      </div>
      <div class="col-md-5">
        <dl class="row mb-0 small">
          <dt class="col-5 text-muted">Requested By</dt><dd class="col-7">{{ $requisition->requester->name ?? '-' }} ({{ $requisition->requester->role ?? '' }})</dd>
          <dt class="col-5 text-muted">Date</dt><dd class="col-7">{{ $requisition->created_at->format('d M Y H:i') }}</dd>
          <dt class="col-5 text-muted">Next Actor</dt><dd class="col-7 fw-semibold text-primary">{{ $requisition->next_actor }}</dd>
          @if($requisition->material)<dt class="col-5 text-muted">Current Stock</dt><dd class="col-7">{{ $requisition->material->current_stock }} {{ $requisition->material->unit }}</dd>@endif
        </dl>
      </div>
    </div>
  </div>
</div>

{{-- Workflow Timeline --}}
<div class="row g-3">
<div class="col-md-5">
  <div class="card stat-card h-100">
    <div class="card-header bg-white border-0 fw-semibold pt-3 px-3"><i class="bi bi-diagram-2 me-2"></i>Workflow Progress</div>
    <div class="card-body pt-0">
      @php
        $steps = [
          ['label'=>'Requisition Submitted',    'statuses'=>['pending_pm','pm_approved','pm_rejected','pending_inventory','in_stock','no_stock','pending_ceo_purchase','ceo_purchase_rejected','pending_funds','funds_approved','funds_rejected','purchasing','purchased','released'],'by'=>$requisition->requester?->name,'at'=>$requisition->created_at],
          ['label'=>'Project Manager Review',   'statuses'=>['pm_approved','pending_inventory','in_stock','no_stock','pending_ceo_purchase','ceo_purchase_rejected','pending_funds','funds_approved','funds_rejected','purchasing','purchased','released'],'by'=>$requisition->pmActioner?->name,'at'=>$requisition->pm_actioned_at,'note'=>$requisition->pm_notes,'rejected'=>$requisition->status==='pm_rejected'],
          ['label'=>'Inventory Stock Check',    'statuses'=>['pending_inventory','in_stock','no_stock','pending_ceo_purchase','ceo_purchase_rejected','pending_funds','funds_approved','funds_rejected','purchasing','purchased','released'],'by'=>$requisition->inventoryActioner?->name,'at'=>$requisition->inventory_actioned_at,'note'=>$requisition->inventory_notes],
          ['label'=>'CEO Purchase Approval',    'statuses'=>['pending_ceo_purchase','pending_funds','funds_approved','funds_rejected','purchasing','purchased','released'],'by'=>$requisition->ceoActioner?->name,'at'=>$requisition->ceo_purchase_actioned_at,'note'=>$requisition->ceo_purchase_notes,'rejected'=>$requisition->status==='ceo_purchase_rejected'],
          ['label'=>'Funds Approved by CEO',    'statuses'=>['funds_approved','purchasing','purchased','released'],'by'=>$requisition->fundsApprover?->name,'at'=>$requisition->funds_approved_at,'note'=>'GH₵ '.number_format($requisition->funds_approved_amount??0,2),'rejected'=>$requisition->status==='funds_rejected'],
          ['label'=>'Purchase & Stock Update',  'statuses'=>['purchased','released'],'by'=>'Inventory Mgr','at'=>$requisition->purchased_at,'note'=>$requisition->actual_purchase_cost?'GH₵ '.number_format($requisition->actual_purchase_cost,2).' — '.$requisition->supplier_name:null],
          ['label'=>'Released to Site',         'statuses'=>['released'],'by'=>'Inventory Mgr','at'=>$requisition->released_at,'note'=>$requisition->release_notes],
        ];
      @endphp
      <div class="ps-2 mt-2">
        @foreach($steps as $i => $step)
        @php $done = in_array($requisition->status, $step['statuses']); $rejected = $step['rejected'] ?? false; @endphp
        <div class="d-flex gap-2 mb-3">
          <div class="d-flex flex-column align-items-center">
            <div class="rounded-circle d-flex align-items-center justify-content-center fw-bold" style="width:28px;height:28px;min-width:28px;background:{{ $done?($rejected?'#dc3545':'#198754'):'#dee2e6' }};color:{{ $done?'#fff':'#6c757d' }};font-size:.75rem">
              @if($done && !$rejected)<i class="bi bi-check"></i>@elseif($rejected)<i class="bi bi-x"></i>@else{{ $i+1 }}@endif
            </div>
            @if(!$loop->last)<div style="width:2px;min-height:28px;background:#dee2e6;margin:0 auto"></div>@endif
          </div>
          <div class="pb-2 flex-grow-1">
            <div class="fw-semibold small {{ $done?($rejected?'text-danger':'text-success'):'text-muted' }}">{{ $step['label'] }}</div>
            @if($done && isset($step['by']) && $step['by'])<div class="small text-muted"><i class="bi bi-person me-1"></i>{{ $step['by'] }}@if(isset($step['at']) && $step['at']) · {{ $step['at']->format('d M, H:i') }}@endif</div>@endif
            @if(isset($step['note']) && $step['note'])<div class="small text-muted fst-italic">{{ $step['note'] }}</div>@endif
          </div>
        </div>
        @endforeach
      </div>
    </div>
  </div>
</div>

<div class="col-md-7">
  {{-- ACTION PANELS — only shown when relevant --}}

  {{-- STEP 2: PM Actions --}}
  @if($requisition->status === 'pending_pm' && auth()->user()->hasAnyRole(['project_manager','super_admin']))
  <div class="card stat-card mb-3 border-warning">
    <div class="card-header bg-warning bg-opacity-10 border-0 fw-semibold pt-3 px-3"><i class="bi bi-person-gear me-2 text-warning"></i>Project Manager Action Required</div>
    <div class="card-body">
      <p class="small text-muted">Review this requisition from <strong>{{ $requisition->requester->name }}</strong> and either approve it for the Inventory Manager or reject it.</p>
      @if($requisition->request_notes)<div class="alert alert-light small py-2"><strong>Requester notes:</strong> {{ $requisition->request_notes }}</div>@endif
      <div class="d-flex gap-2 flex-wrap">
        <form method="POST" action="{{ route('requisitions.pm-approve',$requisition) }}" class="flex-fill">@csrf @method('PATCH')
          <div class="input-group"><input name="pm_notes" class="form-control form-control-sm" placeholder="Approval notes (optional)"><button class="btn btn-success btn-sm"><i class="bi bi-check-lg me-1"></i>Approve & Forward to Inventory</button></div>
        </form>
      </div>
      <form method="POST" action="{{ route('requisitions.pm-reject',$requisition) }}" class="mt-2">@csrf @method('PATCH')
        <div class="input-group"><input name="pm_notes" class="form-control form-control-sm" placeholder="Reason for rejection (required)" required><button class="btn btn-danger btn-sm"><i class="bi bi-x-lg me-1"></i>Reject</button></div>
      </form>
    </div>
  </div>
  @endif

  {{-- STEP 3: Inventory Manager checks stock --}}
  @if(in_array($requisition->status,['pm_approved','pending_inventory']) && auth()->user()->hasAnyRole(['store_keeper','super_admin']))
  <div class="card stat-card mb-3 border-info">
    <div class="card-header bg-info bg-opacity-10 border-0 fw-semibold pt-3 px-3"><i class="bi bi-box-seam me-2 text-info"></i>Inventory Manager — Stock Check</div>
    <div class="card-body">
      @if($requisition->material)
      <div class="alert alert-{{ $requisition->material->isLowStock()?'warning':'success' }} py-2 small">
        <strong>Current Stock:</strong> {{ $requisition->material->current_stock }} {{ $requisition->material->unit }}
        (requested: {{ $requisition->quantity }} {{ $requisition->unit }})
        @if($requisition->material->current_stock >= $requisition->quantity)
        ✅ <strong>Sufficient stock available</strong>
        @else
        ⚠️ <strong>Insufficient stock</strong>
        @endif
      </div>
      @endif
      <form method="POST" action="{{ route('requisitions.inventory-check',$requisition) }}">@csrf
        <div class="mb-2"><textarea name="inventory_notes" class="form-control form-control-sm" rows="2" placeholder="Stock check notes..."></textarea></div>
        <div class="d-flex gap-2">
          <button type="submit" name="stock_available" value="1" class="btn btn-success btn-sm flex-fill"><i class="bi bi-check2-all me-1"></i>Stock Available — Raise SRV</button>
          <button type="submit" name="stock_available" value="0" class="btn btn-warning btn-sm flex-fill"><i class="bi bi-exclamation-triangle me-1"></i>No Stock — Escalate to PM/CEO</button>
        </div>
      </form>
    </div>
  </div>
  @endif

  {{-- STEP 3b: No stock — PM forwards to CEO --}}
  @if($requisition->status === 'no_stock' && auth()->user()->hasAnyRole(['project_manager','super_admin']))
  <div class="card stat-card mb-3 border-warning">
    <div class="card-header bg-warning bg-opacity-10 border-0 fw-semibold pt-3 px-3"><i class="bi bi-arrow-up-right-circle me-2 text-warning"></i>Project Manager — Forward to CEO for Purchase Approval</div>
    <div class="card-body">
      <p class="small text-muted">No stock available. Specify estimated cost and forward to CEO for approval.</p>
      <form method="POST" action="{{ route('requisitions.pm-forward-ceo',$requisition) }}">@csrf @method('PATCH')
        <div class="row g-2">
          <div class="col-md-5"><label class="form-label small">Estimated Purchase Cost (GH₵) *</label><input name="funds_requested" type="number" step="0.01" class="form-control form-control-sm" required></div>
          <div class="col-md-7"><label class="form-label small">Notes to CEO</label><input name="pm_notes" class="form-control form-control-sm" placeholder="Reason, urgency, supplier info..."></div>
        </div>
        <button type="submit" class="btn btn-warning btn-sm mt-2"><i class="bi bi-send me-1"></i>Forward to CEO for Approval</button>
      </form>
    </div>
  </div>
  @endif

  {{-- STEP 4a: CEO approves/rejects purchase --}}
  @if($requisition->status === 'pending_ceo_purchase')
  <div class="card stat-card mb-3 border-primary">
    <div class="card-header bg-primary bg-opacity-10 border-0 fw-semibold pt-3 px-3"><i class="bi bi-person-fill-gear me-2 text-primary"></i>CEO — Purchase Approval</div>
    <div class="card-body">
      <div class="alert alert-info py-2 small"><strong>Requested by PM:</strong> GH₵ {{ number_format($requisition->funds_requested??0,2) }} for purchase of {{ $requisition->quantity }} {{ $requisition->unit }} of {{ $requisition->item_description }}</div>
      @if($requisition->pm_notes)<p class="small text-muted">PM Notes: {{ $requisition->pm_notes }}</p>@endif
      <div class="d-flex gap-2">
        <form method="POST" action="{{ route('requisitions.ceo-approve-purchase',$requisition) }}" class="flex-fill">@csrf @method('PATCH')
          <div class="input-group"><input name="ceo_purchase_notes" class="form-control form-control-sm" placeholder="Approval notes..."><button class="btn btn-success btn-sm"><i class="bi bi-check-lg me-1"></i>Approve Purchase</button></div>
        </form>
      </div>
      <form method="POST" action="{{ route('requisitions.ceo-reject-purchase',$requisition) }}" class="mt-2">@csrf @method('PATCH')
        <div class="input-group"><input name="ceo_purchase_notes" class="form-control form-control-sm" placeholder="Reason for rejection (required)" required><button class="btn btn-danger btn-sm">Reject</button></div>
      </form>
    </div>
  </div>
  @endif

  {{-- STEP 4b: CEO approves funds --}}
  @if($requisition->status === 'pending_funds' && auth()->user()->hasAnyRole(['ceo','super_admin']))
  <div class="card stat-card mb-3 border-primary">
    <div class="card-header bg-primary bg-opacity-10 border-0 fw-semibold pt-3 px-3"><i class="bi bi-cash-coin me-2 text-primary"></i>CEO — Fund Approval</div>
    <div class="card-body">
      <div class="alert alert-info py-2 small"><strong>Funds requested:</strong> GH₵ {{ number_format($requisition->funds_requested??0,2) }}</div>
      <form method="POST" action="{{ route('requisitions.ceo-approve-funds',$requisition) }}">@csrf @method('PATCH')
        <div class="row g-2">
          <div class="col-md-5"><label class="form-label small">Amount Approved (GH₵) *</label><input name="funds_approved_amount" type="number" step="0.01" class="form-control form-control-sm" value="{{ $requisition->funds_requested }}" required></div>
          <div class="col-md-7"><label class="form-label small">Notes</label><input name="funds_notes" class="form-control form-control-sm" placeholder="Any conditions or notes..."></div>
        </div>
        <button type="submit" class="btn btn-success btn-sm mt-2"><i class="bi bi-check-circle me-1"></i>Approve Funds</button>
      </form>
      <form method="POST" action="{{ route('requisitions.ceo-reject-funds',$requisition) }}" class="mt-2">@csrf @method('PATCH')
        <div class="input-group"><input name="funds_notes" class="form-control form-control-sm" placeholder="Reason for rejection (required)" required><button class="btn btn-danger btn-sm">Reject Funds</button></div>
      </form>
    </div>
  </div>
  @endif

  {{-- STEP 5a: Inventory records purchase + uploads invoice --}}
  @if(in_array($requisition->status,['funds_approved','purchasing']) && auth()->user()->hasAnyRole(['store_keeper','super_admin']))
  <div class="card stat-card mb-3 border-success">
    <div class="card-header bg-success bg-opacity-10 border-0 fw-semibold pt-3 px-3"><i class="bi bi-cart-check me-2 text-success"></i>Inventory Manager — Record Purchase</div>
    <div class="card-body">
      <div class="alert alert-success py-2 small"><strong>Funds approved:</strong> GH₵ {{ number_format($requisition->funds_approved_amount??0,2) }}</div>
      <form method="POST" action="{{ route('requisitions.record-purchase',$requisition) }}" enctype="multipart/form-data">@csrf
        <div class="row g-2">
          <div class="col-md-5"><label class="form-label small">Actual Cost (GH₵) *</label><input name="actual_purchase_cost" type="number" step="0.01" class="form-control form-control-sm" required></div>
          <div class="col-md-7"><label class="form-label small">Supplier Name *</label><input name="supplier_name" class="form-control form-control-sm" required></div>
          <div class="col-md-5"><label class="form-label small">Payment Mode *</label><select name="payment_mode" class="form-select form-select-sm" required><option>momo</option><option>hubtel</option><option>cash</option><option>bank_transfer</option><option>cheque</option></select></div>
          <div class="col-md-7">
            <label class="form-label small"><span class="text-danger fw-bold">*</span> Invoice / Receipt Photo (JPG/PNG/PDF)</label>
            <input name="purchase_invoice" type="file" class="form-control form-control-sm" accept=".jpg,.jpeg,.png,.pdf" required>
          </div>
          <div class="col-12">
            <label class="form-label small">Additional Receipt (optional)</label>
            <input name="purchase_receipt" type="file" class="form-control form-control-sm" accept=".jpg,.jpeg,.png,.pdf">
          </div>
        </div>
        <button type="submit" class="btn btn-success btn-sm mt-2 w-100"><i class="bi bi-cloud-upload me-1"></i>Record Purchase & Update Stock</button>
      </form>
    </div>
  </div>
  @endif

  {{-- STEP 5b: Release to site --}}
  @if($requisition->status === 'purchased' && auth()->user()->hasAnyRole(['store_keeper','super_admin']))
  <div class="card stat-card mb-3 border-success">
    <div class="card-header bg-success bg-opacity-10 border-0 fw-semibold pt-3 px-3"><i class="bi bi-box-arrow-right me-2 text-success"></i>Inventory Manager — Release to Site Supervisor</div>
    <div class="card-body">
      <form method="POST" action="{{ route('requisitions.release',$requisition) }}" enctype="multipart/form-data">@csrf
        <div class="row g-2">
          <div class="col-12"><label class="form-label small">Release Notes</label><textarea name="release_notes" class="form-control form-control-sm" rows="2" placeholder="Items released, condition, handover notes..."></textarea></div>
          <div class="col-12"><label class="form-label small">Attach Release Note / Delivery Doc (JPG/PDF)</label><input name="release_attachment" type="file" class="form-control form-control-sm" accept=".jpg,.jpeg,.png,.pdf"></div>
        </div>
        <button type="submit" class="btn btn-success mt-2 w-100"><i class="bi bi-check-circle me-1"></i>Confirm Release to Site Supervisor</button>
      </form>
    </div>
  </div>
  @endif

  {{-- Attachments panel --}}
  @if($requisition->purchase_invoice || $requisition->purchase_receipt || $requisition->release_attachment)
  <div class="card stat-card mb-3">
    <div class="card-header bg-white border-0 fw-semibold pt-3 px-3"><i class="bi bi-paperclip me-2"></i>Attachments</div>
    <div class="card-body d-flex gap-3 flex-wrap">
      @if($requisition->purchase_invoice)
      <a href="{{ Storage::url($requisition->purchase_invoice) }}" target="_blank" class="btn btn-outline-primary btn-sm">
        <i class="bi bi-file-earmark-image me-1"></i>Invoice
      </a>
      @endif
      @if($requisition->purchase_receipt)
      <a href="{{ Storage::url($requisition->purchase_receipt) }}" target="_blank" class="btn btn-outline-success btn-sm">
        <i class="bi bi-receipt me-1"></i>Receipt
      </a>
      @endif
      @if($requisition->release_attachment)
      <a href="{{ Storage::url($requisition->release_attachment) }}" target="_blank" class="btn btn-outline-secondary btn-sm">
        <i class="bi bi-file-earmark-text me-1"></i>Release Note
      </a>
      @endif
    </div>
  </div>
  @endif

  {{-- Final summary when released --}}
  @if($requisition->status === 'released')
  <div class="card stat-card border-success">
    <div class="card-body text-center py-4">
      <div class="fs-1 text-success"><i class="bi bi-patch-check-fill"></i></div>
      <h6 class="fw-bold mt-2">Requisition Complete</h6>
      <p class="text-muted small mb-0">{{ $requisition->quantity }} {{ $requisition->unit }} of <strong>{{ $requisition->item_description }}</strong> released to Site Supervisor on {{ $requisition->released_at?->format('d M Y H:i') }}</p>
      @if($requisition->actual_purchase_cost)<div class="mt-2 text-muted small">Total Cost: <strong>GH₵ {{ number_format($requisition->actual_purchase_cost,2) }}</strong> · {{ $requisition->supplier_name }}</div>@endif
    </div>
  </div>
  @endif

</div>{{-- /col-md-7 --}}
</div>{{-- /row --}}
@endsection