@extends('admin.admin_dashboard')
@section('admin')

<div class="page-content chm-orgchart-page">
    <x-chm.layout.page title="Staff org chart" subtitle="Line managers, department heads & requisition approval routing" icon="bx bx-sitemap">
        <x-slot:breadcrumb>
            <x-chm.breadcrumb-item :href="route('all.users')">Users</x-chm.breadcrumb-item>
            <x-chm.breadcrumb-item :active="true">Org chart</x-chm.breadcrumb-item>
        </x-slot:breadcrumb>

        <x-slot:actions>
            <x-chm.button variant="outline-primary" icon="bx bx-user" :href="route('all.users')">All users</x-chm.button>
        </x-slot:actions>

        <div class="row row-cols-2 row-cols-md-4 g-2 mb-2 chm-orgchart-stats">
            <x-chm.stat-card :label="$canViewFull ? 'Active staff' : 'Your team'" :value="$stats['total']" icon="bx bx-group" color="primary" />
            <x-chm.stat-card label="With line manager" :value="$stats['with_manager']" icon="bx bx-git-merge" color="info" />
            <x-chm.stat-card label="Top-level leaders" :value="$stats['top_level']" icon="bx bx-crown" color="warning" />
            <x-chm.stat-card label="Depts with head" :value="$stats['departments_with_head']" icon="bx bx-buildings" color="success" />
        </div>

        @unless($canViewFull)
            <x-chm.alert type="info" class="mb-2 py-2">
                You are viewing <strong>your reporting line only</strong> — yourself and staff who report to you (directly or indirectly).
                Managers and colleagues outside your branch are hidden.
                Contact a Super Admin to update line managers or department heads.
            </x-chm.alert>
        @endunless

        @if($canViewFull && ($stats['without_manager'] ?? 0) > 0 && $canManage)
            <x-chm.alert type="warning" class="mb-2 py-2">
                <strong>{{ $stats['without_manager'] }}</strong> staff have no line manager — requisitions from them skip straight to HOD approval.
            </x-chm.alert>
        @endif

        @unless($canManage || $canManageDepartments)
            <x-chm.alert type="info" class="mb-3">
                You have view-only access. Only a Super Admin can assign line managers, department heads, and ministry supervisors.
            </x-chm.alert>
        @endunless

        <ul class="nav nav-tabs chm-tabs" role="tablist">
            <x-chm.tab target="chart" icon="bx bx-network-chart" :active="true">Org chart</x-chm.tab>
            <x-chm.tab target="directory" icon="bx bx-list-ul">Directory</x-chm.tab>
            <x-chm.tab target="insights" icon="bx bx-pulse">
                Insights
                @if(($stats['issue_count'] ?? 0) > 0)
                    <span class="badge bg-danger ms-1">{{ $stats['issue_count'] }}</span>
                @endif
            </x-chm.tab>
            @if($canManage)
                <x-chm.tab target="assignments" icon="bx bx-edit">Manage assignments</x-chm.tab>
            @endif
            @if($canManageDepartments)
                <x-chm.tab target="departments" icon="bx bx-buildings">Department leadership</x-chm.tab>
            @endif
        </ul>

        <div class="tab-content chm-tab-content mt-3">
        <x-chm.tab-panel id="chart" :active="true">
            <x-chm.card title="Reporting structure" class="chm-orgchart-card-wrap mb-0">
                @if(empty($tree))
                    <x-chm.empty-state message="No staff found. Add users and assign line managers." />
                @else
                    <div class="chm-orgchart-toolbar">
                        <div class="chm-orgchart-toolbar-group chm-orgchart-toolbar-search">
                            <label class="chm-orgchart-toolbar-label" for="orgchart-staff-search">Find staff</label>
                            <select id="orgchart-staff-search" class="form-select form-select-sm chm-select" data-placeholder="Search by name…">
                                <option value=""></option>
                                @foreach($users as $user)
                                    <option value="{{ $user->id }}">{{ $user->name }} — {{ $user->primaryRoleName() }}</option>
                                @endforeach
                            </select>
                        </div>

                        <div class="chm-orgchart-toolbar-group chm-orgchart-toolbar-filter">
                            <label class="chm-orgchart-toolbar-label" for="orgchart-dept-filter">Department</label>
                            <select id="orgchart-dept-filter" class="form-select form-select-sm chm-select" data-placeholder="All departments">
                                <option value=""></option>
                                @foreach($departments as $department)
                                    <option value="{{ $department->id }}">{{ $department->name }}</option>
                                @endforeach
                            </select>
                        </div>

                        <div class="chm-orgchart-toolbar-group chm-orgchart-toolbar-depth">
                            <label class="chm-orgchart-toolbar-label" for="orgchart-depth">Show levels</label>
                            <input type="range" class="form-range" id="orgchart-depth" min="1" max="{{ max(1, $maxDepth + 1) }}" value="{{ max(1, $maxDepth + 1) }}" title="Limit visible hierarchy depth">
                            <span class="chm-orgchart-depth-val" id="orgchart-depth-label">{{ max(1, $maxDepth + 1) }}</span>
                        </div>

                        <div class="chm-orgchart-toolbar-group">
                            <button type="button" class="btn btn-sm btn-outline-primary" id="orgchart-find-me" title="Find my position (M)">
                                <i class="bx bx-current-location"></i> Me
                            </button>
                            <button type="button" class="btn btn-sm btn-outline-primary" id="orgchart-my-team" title="Highlight my team">
                                <i class="bx bx-group"></i> Team
                            </button>
                            @if(($stats['issue_count'] ?? 0) > 0)
                                <button type="button" class="btn btn-sm btn-outline-danger" id="orgchart-show-issues" title="View routing issues">
                                    <i class="bx bx-error-circle"></i> {{ $stats['issue_count'] }}
                                </button>
                            @endif
                        </div>

                        <div class="chm-orgchart-toolbar-group">
                            <span class="chm-orgchart-toolbar-label">Zoom</span>
                            <button type="button" class="btn btn-sm btn-outline-secondary" id="orgchart-zoom-out" title="Zoom out">−</button>
                            <span class="chm-orgchart-zoom-pct" id="orgchart-zoom-label">100%</span>
                            <button type="button" class="btn btn-sm btn-outline-secondary" id="orgchart-zoom-in" title="Zoom in">+</button>
                            <button type="button" class="btn btn-sm btn-outline-primary" id="orgchart-zoom-fit">Fit</button>
                            <button type="button" class="btn btn-sm btn-link text-muted px-1" id="orgchart-zoom-reset">Reset</button>
                        </div>

                        <div class="chm-orgchart-toolbar-group">
                            <button type="button" class="btn btn-sm btn-outline-secondary" id="orgchart-expand-all" title="Expand all branches">
                                <i class="bx bx-expand-vertical"></i>
                            </button>
                            <button type="button" class="btn btn-sm btn-outline-secondary" id="orgchart-collapse-all" title="Collapse all branches">
                                <i class="bx bx-collapse-vertical"></i>
                            </button>
                            <button type="button" class="btn btn-sm btn-outline-secondary" id="orgchart-fullscreen" title="Fullscreen">
                                <i class="bx bx-fullscreen"></i>
                            </button>
                            <button type="button" class="btn btn-sm btn-outline-secondary" id="orgchart-export-csv" title="Download org structure CSV">
                                <i class="bx bx-download"></i>
                            </button>
                            <button type="button" class="btn btn-sm btn-outline-secondary" id="orgchart-shortcuts" title="Keyboard shortcuts">
                                <i class="bx bx-keyboard"></i>
                            </button>
                            <button type="button" class="btn btn-sm btn-outline-secondary" id="orgchart-print" title="Print org chart">
                                <i class="bx bx-printer"></i>
                            </button>
                        </div>
                    </div>

                    <div class="chm-orgchart-recent d-none" id="orgchart-recent">
                        <span class="chm-orgchart-toolbar-label">Recent</span>
                        <div class="chm-orgchart-recent-list" id="orgchart-recent-list"></div>
                    </div>

                    <div class="chm-orgchart-legend">
                        <span class="chm-orgchart-legend-item"><i class="bx bx-crown"></i> Top-level</span>
                        <span class="chm-orgchart-legend-item"><span class="chm-orgchart-hod-badge">HOD</span> Dept head</span>
                        <span class="chm-orgchart-legend-item"><span class="chm-orgchart-legend-dot is-path"></span> Reporting path</span>
                        <span class="chm-orgchart-legend-item"><span class="chm-orgchart-legend-dot is-team"></span> My team</span>
                        <span class="chm-orgchart-legend-item text-muted">Drag background to pan · Scroll to zoom area</span>
                    </div>

                    <div class="chm-orgchart-layout">
                        <div class="chm-orgchart-main">
                            <div class="chm-orgchart-viewport" id="orgchart-viewport">
                                <div class="chm-orgchart-scale" id="orgchart-scale">
                                    <div class="chm-orgchart-tree">
                                        <ul>
                                            @foreach($tree as $node)
                                                @include('admin.administration.org_chart.partials.chart-node', [
                                                    'node' => $node,
                                                    'departmentHeadIds' => $departmentHeadIds,
                                                    'canManage' => $canManage,
                                                ])
                                            @endforeach
                                        </ul>
                                    </div>
                                </div>
                            </div>
                        </div>

                        <aside class="chm-orgchart-detail is-empty" id="orgchart-detail-panel" aria-live="polite">
                            <div class="chm-orgchart-detail-empty">
                                <i class="bx bx-user-pin"></i>
                                <p>Select a staff member to view their reporting line and requisition approvers.</p>
                            </div>
                            <div class="chm-orgchart-detail-body d-none" id="orgchart-detail-body"></div>
                        </aside>
                    </div>
                @endif
            </x-chm.card>

            @if($canViewFull)
                @include('admin.administration.org_chart.partials.external-users')
            @endif
        </x-chm.tab-panel>

        <x-chm.tab-panel id="directory">
            @include('admin.administration.org_chart.partials.directory')
        </x-chm.tab-panel>

        <x-chm.tab-panel id="insights">
            @include('admin.administration.org_chart.partials.insights')
        </x-chm.tab-panel>

        @if($canManage)
            <x-chm.tab-panel id="assignments">
                <x-chm.card title="Assign line managers">
                    <p class="text-muted small mb-3">Search and select managers with Select2. Changes affect requisition email routing immediately.</p>
                    <div class="chm-org-manage chm-form-section">
                        <div class="table-responsive">
                            <table class="table align-middle">
                                <thead>
                                    <tr>
                                        <th>Staff member</th>
                                        <th style="min-width:220px">Reports to</th>
                                        <th style="min-width:180px">Department</th>
                                        <th></th>
                                    </tr>
                                </thead>
                                <tbody>
                                    @foreach($allUsers as $user)
                                        <tr>
                                            <td>
                                                <div class="d-flex align-items-center gap-2">
                                                    <img src="{{ $user->avatarUrl() }}" alt="" class="chm-org-avatar chm-org-avatar-sm">
                                                    <div>
                                                        <div class="fw-semibold">{{ $user->name }}</div>
                                                        <div class="small text-muted">{{ $user->primaryRoleName() }}</div>
                                                    </div>
                                                </div>
                                            </td>
                                            <td colspan="2">
                                                <form method="post" action="{{ route('staff.org-chart.users.manager', $user) }}" class="row g-2 align-items-end">
                                                    @csrf
                                                    <div class="col-md-6">
                                                        <select name="manager_id" class="form-select chm-select" data-placeholder="Top level (no manager)">
                                                            <option value=""></option>
                                                            @foreach($allUsers as $candidate)
                                                                @if($candidate->id !== $user->id)
                                                                    <option value="{{ $candidate->id }}" @selected($user->manager_id == $candidate->id)>{{ $candidate->name }}</option>
                                                                @endif
                                                            @endforeach
                                                        </select>
                                                    </div>
                                                    <div class="col-md-4">
                                                        <select name="department_id" class="form-select chm-select" data-placeholder="Department">
                                                            <option value=""></option>
                                                            @foreach($departments as $department)
                                                                <option value="{{ $department->id }}" @selected($user->department_id == $department->id)>{{ $department->name }}</option>
                                                            @endforeach
                                                        </select>
                                                    </div>
                                                    <div class="col-md-2">
                                                        <button type="submit" class="btn btn-sm btn-primary w-100">Save</button>
                                                    </div>
                                                </form>
                                            </td>
                                        </tr>
                                    @endforeach
                                </tbody>
                            </table>
                        </div>
                    </div>
                </x-chm.card>
            </x-chm.tab-panel>
        @endif

        @if($canManageDepartments)
            <x-chm.tab-panel id="departments">
                <x-chm.card title="Department leadership">
                    <p class="text-muted small mb-3">
                        Set the department head (HOD) and ministry supervisor for final requisition approval.
                        Senior approval goes to the HOD's line manager when configured, otherwise the ministry supervisor.
                    </p>
                    <div class="chm-org-manage chm-form-section row g-3">
                        @foreach($allDepartments as $department)
                            @php
                                $seniorMeta = $departmentSeniorMeta[$department->id] ?? null;
                            @endphp
                            <div class="col-md-6">
                                <form method="post" action="{{ route('staff.org-chart.departments.head', $department) }}" class="border rounded p-3 h-100">
                                    @csrf
                                    <div class="fw-semibold mb-2">{{ $department->name }}</div>

                                    <label class="form-label small text-muted mb-1">Department head (HOD)</label>
                                    <select name="head_user_id" class="form-select chm-select mb-2" data-placeholder="Select department head">
                                        <option value=""></option>
                                        @foreach($allUsers as $user)
                                            <option value="{{ $user->id }}" @selected($department->head_user_id == $user->id)>{{ $user->name }}</option>
                                        @endforeach
                                    </select>
                                    @if($department->headUser)
                                        <div class="d-flex align-items-center gap-2 mb-3">
                                            <img src="{{ $department->headUser->avatarUrl() }}" alt="" class="chm-org-avatar chm-org-avatar-sm">
                                            <span class="small">
                                                {{ $department->headUser->name }}
                                                @if($department->headUser->manager)
                                                    · reports to {{ $department->headUser->manager->name }}
                                                @else
                                                    · <span class="text-warning">no line manager</span>
                                                @endif
                                            </span>
                                        </div>
                                    @endif

                                    <label class="form-label small text-muted mb-1">Ministry supervisor</label>
                                    <select name="ministry_supervisor_user_id" class="form-select chm-select mb-2" data-placeholder="Select ministry supervisor">
                                        <option value=""></option>
                                        @foreach($allUsers as $user)
                                            <option value="{{ $user->id }}" @selected($department->ministry_supervisor_user_id == $user->id)>{{ $user->name }}</option>
                                        @endforeach
                                    </select>
                                    @if($department->ministrySupervisor)
                                        <div class="d-flex align-items-center gap-2 mb-3">
                                            <img src="{{ $department->ministrySupervisor->avatarUrl() }}" alt="" class="chm-org-avatar chm-org-avatar-sm">
                                            <span class="small">{{ $department->ministrySupervisor->name }}</span>
                                        </div>
                                    @endif

                                    @if($seniorMeta)
                                        <div class="rounded bg-light p-2 mb-3 small">
                                            <div class="fw-semibold">Senior approval route</div>
                                            @if($seniorMeta['users']->isNotEmpty())
                                                @foreach($seniorMeta['users'] as $approver)
                                                    <div class="d-flex align-items-center gap-2 mt-1">
                                                        <img src="{{ $approver->avatarUrl() }}" alt="" class="chm-org-avatar chm-org-avatar-sm">
                                                        <span>{{ $approver->name }}</span>
                                                    </div>
                                                @endforeach
                                                @if(!empty($seniorMeta['subtitle']))
                                                    <div class="text-muted mt-1">{{ $seniorMeta['subtitle'] }}</div>
                                                @endif
                                            @else
                                                <div class="text-danger mt-1">No senior approver configured</div>
                                            @endif
                                        </div>
                                    @endif

                                    <button type="submit" class="btn btn-sm btn-outline-primary">Save leadership</button>
                                </form>
                            </div>
                        @endforeach
                    </div>
                </x-chm.card>
            </x-chm.tab-panel>
        @endif
        </div>
    </x-chm.layout.page>
</div>

@endsection

@push('scripts')
@php
    $orgChartConfig = [
        'currentUserId' => $currentUserId,
        'focusUserId' => $focusUserId,
        'canManage' => $canManage,
        'canViewFull' => $canViewFull,
        'staffMeta' => $staffMeta,
        'flatDirectory' => $flatDirectory,
        'maxDepth' => $maxDepth,
        'issues' => $issues,
        'userOptions' => $users->map(fn ($u) => ['id' => $u->id, 'name' => $u->name])->values()->all(),
        'editUserRoute' => route('edit.user', ['id' => '__ID__']),
        'updateManagerRoute' => url('/staff/org-chart/users/__USER__/manager'),
        'csrfToken' => csrf_token(),
    ];
@endphp
<script>
window.chmOrgChartConfig = @json($orgChartConfig);
</script>
<script src="{{ asset('backend/assets/js/chm-orgchart.js') }}"></script>
@endpush