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

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

@if($paper->isAccepted())
    <div class="alert alert-warning">This paper has been accepted. Only Technical Committee Editor/Chairman or assigned review managers can change authors.</div>
@else
    <div class="alert alert-info">You can edit, reorder, or remove co-authors until the paper is accepted.</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('user.papers.authors.update', $paper) }}">
    @csrf
    @method('PUT')

    @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-success">Save Authors</button>
        <a href="{{ route('user.paper-details', $paper) }}" class="btn btn-light">Cancel</a>
    </div>
</form>
@endsection