<?php

namespace App\Http\Controllers\Admin;

use App\Http\Controllers\Controller;
use App\Models\Classes;
use App\Models\HandlingType;
use App\Models\SpThreshold;
use App\Models\ViolationCategory;
use App\Models\ViolationType;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Str;
use Illuminate\View\View;

class MasterDataController extends Controller
{
    // === Violation Categories ===
    public function categories(): View
    {
        $categories = ViolationCategory::orderBy('sort_order')->get();
        return view('settings.categories', compact('categories'));
    }

    public function storeCategory(Request $request): RedirectResponse
    {
        $validated = $request->validate([
            'name' => ['required', 'string', 'max:255'],
            'color' => ['required', 'string', 'max:7'],
            'description' => ['nullable', 'string', 'max:500'],
            'sort_order' => ['nullable', 'integer', 'min:0'],
        ]);

        $validated['slug'] = Str::slug($validated['name']);

        ViolationCategory::create($validated);

        return back()->with('success', 'Kategori pelanggaran berhasil ditambahkan.');
    }

    public function updateCategory(Request $request, ViolationCategory $category): RedirectResponse
    {
        $validated = $request->validate([
            'name' => ['required', 'string', 'max:255'],
            'color' => ['required', 'string', 'max:7'],
            'description' => ['nullable', 'string', 'max:500'],
            'sort_order' => ['nullable', 'integer', 'min:0'],
            'is_active' => ['boolean'],
        ]);

        $validated['slug'] = Str::slug($validated['name']);
        $validated['is_active'] = $request->boolean('is_active');

        $category->update($validated);

        return back()->with('success', 'Kategori berhasil diperbarui.');
    }

    public function destroyCategory(ViolationCategory $category): RedirectResponse
    {
        if ($category->violationTypes()->count() > 0) {
            return back()->with('error', 'Kategori masih memiliki jenis pelanggaran. Hapus jenis pelanggaran terlebih dahulu.');
        }

        $category->delete();

        return back()->with('success', 'Kategori berhasil dihapus.');
    }

    // === Violation Types ===
    public function types(Request $request): View
    {
        $query = ViolationType::with('category');

        if ($request->filled('search')) {
            $search = $request->search;
            $query->where(function ($q) use ($search) {
                $q->where('name', 'like', "%{$search}%")
                  ->orWhere('default_sanction', 'like', "%{$search}%");
            });
        }

        if ($request->filled('category_id')) {
            $query->where('category_id', $request->category_id);
        }

        $types = $query->orderBy('category_id')->orderBy('name')->paginate(20);
        $categories = ViolationCategory::orderBy('sort_order')->get();

        return view('settings.violation-types', compact('types', 'categories'));
    }

    public function storeType(Request $request): RedirectResponse
    {
        $validated = $request->validate([
            'category_id' => ['required', 'exists:violation_categories,id'],
            'name' => ['required', 'string', 'max:255'],
            'points' => ['required', 'integer', 'min:0', 'max:500'],
            'default_sanction' => ['nullable', 'string', 'max:500'],
            'description' => ['nullable', 'string', 'max:1000'],
        ]);

        $validated['slug'] = Str::slug($validated['name']);
        $validated['is_active'] = true;

        ViolationType::create($validated);

        return back()->with('success', 'Jenis pelanggaran berhasil ditambahkan.');
    }

    public function updateType(Request $request, ViolationType $type): RedirectResponse
    {
        $validated = $request->validate([
            'category_id' => ['required', 'exists:violation_categories,id'],
            'name' => ['required', 'string', 'max:255'],
            'points' => ['required', 'integer', 'min:0', 'max:500'],
            'default_sanction' => ['nullable', 'string', 'max:500'],
            'description' => ['nullable', 'string', 'max:1000'],
            'is_active' => ['boolean'],
        ]);

        // System types: slug tetap, nama bisa diubah tapi slug gak ikut berubah
        if (!$type->is_system) {
            $validated['slug'] = Str::slug($validated['name']);
        }
        $validated['is_active'] = $request->boolean('is_active');

        $type->update($validated);

        return back()->with('success', 'Jenis pelanggaran berhasil diperbarui.');
    }

    public function destroyType(ViolationType $type): RedirectResponse
    {
        if ($type->is_system) {
            return back()->with('error', 'Jenis pelanggaran sistem tidak bisa dihapus. Nonaktifkan saja jika tidak diperlukan.');
        }

        if ($type->violations()->count() > 0) {
            return back()->with('error', 'Jenis pelanggaran ini sudah tercatat pada pelanggaran siswa. Nonaktifkan saja.');
        }

        $type->delete();

        return back()->with('success', 'Jenis pelanggaran berhasil dihapus.');
    }

    // === Handling Types (Jenis Penanganan) ===
    public function handlingTypes(): View
    {
        $types = HandlingType::orderBy('sort_order')->orderBy('name')->get();
        $roles = HandlingType::roles();

        return view('settings.handling-types', compact('types', 'roles'));
    }

    public function storeHandlingType(Request $request): RedirectResponse
    {
        $validated = $request->validate([
            'name' => ['required', 'string', 'max:255', 'unique:handling_types,name'],
            'icon' => ['required', 'string', 'max:100'],
            'color' => ['required', 'string', 'max:7'],
            'sort_order' => ['nullable', 'integer', 'min:0', 'max:999'],
        ]);

        $validated['sort_order'] = $validated['sort_order'] ?? 0;
        $validated['is_active'] = true;

        HandlingType::create($validated);

        return back()->with('success', 'Jenis penanganan berhasil ditambahkan.');
    }

    public function updateHandlingType(Request $request, HandlingType $type): RedirectResponse
    {
        $validated = $request->validate([
            'name' => ['required', 'string', 'max:255', 'unique:handling_types,name,' . $type->id],
            'icon' => ['required', 'string', 'max:100'],
            'color' => ['required', 'string', 'max:7'],
            'sort_order' => ['nullable', 'integer', 'min:0', 'max:999'],
            'is_active' => ['boolean'],
        ]);

        $validated['sort_order'] = $validated['sort_order'] ?? $type->sort_order;
        $validated['is_active'] = $request->boolean('is_active');

        $type->update($validated);

        return back()->with('success', 'Jenis penanganan berhasil diperbarui.');
    }

    public function reorderHandlingTypes(Request $request): JsonResponse
    {
        $validated = $request->validate([
            'order' => ['required', 'array'],
            'order.*' => ['integer', 'exists:handling_types,id'],
        ]);

        foreach ($validated['order'] as $i => $id) {
            HandlingType::where('id', $id)->update(['sort_order' => $i + 1]);
        }

        return response()->json(['ok' => true]);
    }

    public function destroyHandlingType(HandlingType $type): RedirectResponse
    {
        if ($type->is_system) {
            return back()->with('error', 'Jenis penanganan sistem tidak bisa dihapus. Nonaktifkan saja jika tidak diperlukan.');
        }

        $type->delete();

        return back()->with('success', 'Jenis penanganan berhasil dihapus.');
    }

    public function storeHandlingRole(Request $request): RedirectResponse
    {
        $validated = $request->validate([
            'role' => ['required', 'string', 'max:100'],
        ]);

        $roles = HandlingType::roles();
        $role = trim($validated['role']);

        if (in_array($role, $roles)) {
            return back()->with('error', 'Peran "' . $role . '" sudah ada.');
        }

        $roles[] = $role;
        HandlingType::saveRoles($roles);

        return back()->with('success', 'Peran "' . $role . '" berhasil ditambahkan.');
    }

    public function destroyHandlingRole(string $role): RedirectResponse
    {
        $roles = HandlingType::roles();
        $roles = array_values(array_filter($roles, fn($r) => $r !== $role));
        HandlingType::saveRoles($roles);

        return back()->with('success', 'Peran "' . $role . '" berhasil dihapus.');
    }

    public function reorderHandlingRoles(Request $request): JsonResponse
    {
        $validated = $request->validate([
            'order' => ['required', 'array'],
            'order.*' => ['required', 'string', 'max:100'],
        ]);

        HandlingType::saveRoles($validated['order']);

        return response()->json(['ok' => true]);
    }

    // === Homeroom Teachers (Wali Kelas) ===
    public function homeroomTeachers(): View
    {
        $classes = Classes::with('homeroomTeacher')
            ->where('is_active', true)
            ->orderBy('level')
            ->orderBy('name')
            ->get();
        $teachers = \App\Models\User::where(function ($q) {
            $q->whereJsonContains('roles', 'wali_kelas')->orWhere('role', 'wali_kelas');
        })
            ->where('is_active', true)
            ->orderBy('name')
            ->get();

        return view('settings.homeroom', compact('classes', 'teachers'));
    }

    public function updateHomeroomTeacher(Request $request): RedirectResponse
    {
        $validated = $request->validate([
            'class_id' => ['required', 'exists:classes,id'],
            'teacher_id' => ['nullable', 'exists:users,id'],
        ]);

        $class = Classes::findOrFail($validated['class_id']);
        $class->homeroom_teacher_id = $validated['teacher_id'] ?? null;
        $class->save();

        return back()->with('success', 'Wali kelas untuk ' . $class->name . ' berhasil diperbarui.');
    }

    // === SP Thresholds ===
    public function thresholds(): View
    {
        $thresholds = SpThreshold::orderBy('min_points')->get();
        return view('settings.thresholds', compact('thresholds'));
    }

    public function updateThresholds(Request $request): RedirectResponse
    {
        $thresholds = $request->validate([
            'thresholds' => ['required', 'array'],
            'thresholds.*.id' => ['required', 'exists:sp_thresholds,id'],
            'thresholds.*.min_points' => ['required', 'integer', 'min:0'],
            'thresholds.*.max_points' => ['nullable', 'integer', 'min:0'],
            'thresholds.*.name' => ['required', 'string', 'max:255'],
            'thresholds.*.default_description' => ['nullable', 'string', 'max:500'],
        ]);

        $inputs = $request->input('thresholds', []);
        $idx = 0;
        foreach ($thresholds['thresholds'] as $data) {
            $update = [
                'name' => $data['name'],
                'min_points' => $data['min_points'],
                'max_points' => $data['max_points'],
                'default_description' => $data['default_description'],
                'is_active' => isset($inputs[$idx]['is_active']),
            ];

            SpThreshold::where('id', $data['id'])->update($update);
            $idx++;
        }

        return back()->with('success', 'Ambang batas SP berhasil diperbarui.');
    }

    public function storeThreshold(Request $request): RedirectResponse
    {
        $data = $request->validate([
            'name' => ['required', 'string', 'max:255'],
            'min_points' => ['required', 'integer', 'min:0'],
            'max_points' => ['nullable', 'integer', 'min:0'],
            'default_description' => ['nullable', 'string', 'max:500'],
            'color' => ['nullable', 'string', 'max:20'],
        ]);

        $slug = str($data['name'])->slug('-');
        SpThreshold::create([
            'name' => $data['name'],
            'slug' => $slug,
            'min_points' => $data['min_points'],
            'max_points' => $data['max_points'],
            'default_description' => $data['default_description'],
            'color' => $data['color'] ?? '#6b7280',
            'is_active' => true,
        ]);

        return redirect()->route('settings.thresholds')->with('success', 'Threshold ' . $data['name'] . ' berhasil ditambahkan.');
    }

    public function destroyThreshold(SpThreshold $threshold): RedirectResponse
    {
        $name = $threshold->name;
        $threshold->delete();

        return redirect()->route('settings.thresholds')->with('success', 'Threshold ' . $name . ' berhasil dihapus.');
    }
}