@extends('admin.layouts.app')
@section('title','Edit Paper Authors')
@section('page-title','Edit Paper Authors')
@section('page-subtitle',$paper->paper_code)
@section('content')

@if($errors->any())<div class="alert alert-danger"><ul class="mb-0">@foreach($errors->all() as $e)<li>{{ $e }}</li>@endforeach</ul></div>@endif

@php
    $principal = $paper->authors->firstWhere('author_order', 1) ?? $paper->authors->first();
    $coAuthors = $paper->authors->where('author_order', '>', 1)->sortBy('author_order')->values()->map(fn ($a) => [
        'first_name' => $a->first_name,
        'other_name' => $a->other_name,
        'last_name' => $a->last_name,
        'email' => $a->email,
        'phone' => $a->phone,
        'affiliation' => $a->affiliation,
    ])->all();
@endphp

<form method="POST" action="{{ route('admin.papers.authors.update', $paper) }}" class="cardx p-4">
    @csrf
    @method('PUT')

    <div class="alert alert-secondary">
        Principal author: <strong>{{ $paper->user?->name }}</strong> ({{ $paper->user?->email }}) — formatted as <strong>{{ $paper->authorsDisplayLine() }}</strong>
    </div>

    @include('user.partials.paper-author-fields', [
        'coAuthors' => old('authors', $coAuthors),
        'principalPhone' => old('principal_phone', $principal?->phone ?? $paper->user?->phone_number),
        'principalAffiliation' => old('principal_affiliation', $principal?->affiliation ?? $paper->user?->affiliation),
    ])

    <div class="mt-3">
        <button type="submit" class="btn btn-green">Save Authors</button>
        <a href="{{ route('admin.papers.show', $paper) }}" class="btn btn-light">Cancel</a>
    </div>
</form>
@endsection