<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use Illuminate\View\View;

/**
 * Stub controller for JD Wizard UI preview.
 * TODO: Backend developer to replace with real logic, model bindings, and repository.
 */
class JobDescriptionController extends Controller
{
    public function index(Request $request): View
    {
        // Placeholder stats - replace with real query
        $stats = [
            'total' => 6,
            'approved' => 2,
            'published' => 1,
            'drafts' => 2,
        ];

        // Dummy data for UI preview - replace with real Eloquent query
        $dummyData = [
            (object) ['id' => 1, 'job_id' => 'JD-001', 'job_title' => 'Senior Software Engineer', 'department' => 'Engineering', 'level' => 'L5 - Senior', 'status' => 'approved', 'author' => 'Sarah Johnson', 'updated_at' => now()->subDays(2)],
            (object) ['id' => 2, 'job_id' => 'JD-002', 'job_title' => 'Product Manager', 'department' => 'Product', 'level' => 'L4 - Mid-Level', 'status' => 'draft', 'author' => 'Michael Chen', 'updated_at' => now()->subDays(2)],
            (object) ['id' => 3, 'job_id' => 'JD-003', 'job_title' => 'UX Designer', 'department' => 'Design', 'level' => 'L3 - Junior', 'status' => 'draft', 'author' => 'Sarah Johnson', 'updated_at' => now()->subDays(3)],
            (object) ['id' => 4, 'job_id' => 'JD-004', 'job_title' => 'Data Analyst', 'department' => 'Analytics', 'level' => 'L4 - Mid-Level', 'status' => 'approved', 'author' => 'Emma Davis', 'updated_at' => now()->subDays(3)],
            (object) ['id' => 5, 'job_id' => 'JD-005', 'job_title' => 'Marketing Specialist', 'department' => 'Marketing', 'level' => 'L3 - Junior', 'status' => 'unpublished', 'author' => 'John Smith', 'updated_at' => now()->subDays(3)],
            (object) ['id' => 6, 'job_id' => 'JD-006', 'job_title' => 'Software Engineer', 'department' => 'Engineering', 'level' => 'L5 - Senior', 'status' => 'published', 'author' => 'Sarah Johnson', 'updated_at' => now()->subDays(4)],
        ];

        $jobDescriptions = new \Illuminate\Pagination\LengthAwarePaginator(
            collect($dummyData),
            6,
            10,
            1,
            ['path' => request()->url()]
        );

        return view('dashboard.job-descriptions.index', compact('stats', 'jobDescriptions'));
    }

    public function templates(): View
    {
        return view('dashboard.job-descriptions.templates');
    }

    public function create(): View
    {
        return view('dashboard.job-descriptions.create');
    }

    public function store(Request $request)
    {
        // TODO: Backend developer to validate, create JD record, trigger generation
        // Stub: redirect to generating page with placeholder ID
        $placeholderId = 1;

        return redirect()->route('dashboard.job-descriptions.generating', $placeholderId);
    }

    public function show($jobDescription): View
    {
        // Placeholder object for UI preview - wizard step 2 (content review)
        $jobDescription = (object) [
            'id' => $jobDescription,
            'job_id' => 'JD-001',
            'job_title' => 'Software Engineer',
            'department' => 'Engineering',
            'level' => 'L5 - Senior',
            'location' => 'New York, NY',
            'employment_type' => 'Full-Time',
            'status' => 'draft',
            'role_summary' => 'We are seeking a highly skilled professional to join our Engineering team. In this full-time role based in New York, you will play a crucial part in driving innovation and excellence. This position offers an exciting opportunity to work with cutting-edge technologies and collaborate with talented professionals.',
            'responsibilities' => [
                'Lead the design and development of scalable software solutions',
                'Collaborate with cross-functional teams to define technical requirements',
                'Mentor junior team members and provide technical guidance',
                'Participate in code reviews and ensure best practices',
                'Drive continuous improvement in development processes',
            ],
            'required_skills' => [
                '5+ years of experience in software development',
                'Proficiency in modern programming languages (Python, Java, or JavaScript)',
                'Strong understanding of software architecture and design patterns',
                'Experience with cloud platforms (AWS, Azure, or GCP)',
                'Excellent problem-solving and analytical skills',
            ],
            'qualifications' => [
                "Bachelor's degree in Computer Science or related field",
                "Master's degree preferred",
                'Relevant industry certifications (AWS, Azure, etc.)',
                'Proven track record of delivering complex projects',
            ],
            'competencies' => [
                'Technical Leadership',
                'Problem Solving',
                'Communication',
                'Team Collaboration',
                'Innovation',
            ],
        ];

        return view('dashboard.job-descriptions.show', compact('jobDescription'));
    }

    /**
     * Detail view for a single job description (non-wizard view).
     */
    public function detail($jobDescription): View
    {
        // Placeholder object for UI preview
        $jobDescription = (object) [
            'id' => $jobDescription,
            'job_id' => 'JD-001',
            'job_title' => 'Senior Software Engineer',
            'department' => 'Engineering',
            'level' => 'L5 - Senior',
            'location' => 'San Francisco, CA (Hybrid)',
            'employment_type' => 'Full-time',
            'status' => 'approved',
            'created_by' => 'Sarah Johnson',
            'approved_by' => 'David Martinez',
            'approved_at' => now()->format('Y-m-d'),
            'updated_at' => now()->format('Y-m-d'),
            'role_summary' => 'We are seeking a highly skilled Senior Software Engineer to join our dynamic engineering team. In this role, you will be responsible for designing, developing, and maintaining scalable software solutions that power our enterprise platform. You\'ll work closely with cross-functional teams to deliver high-quality products that meet our customers\' needs.',
            'responsibilities' => [
                'Design and implement complex software systems and features',
                'Lead technical discussions and architectural decisions',
                'Mentor junior engineers and conduct code reviews',
                'Collaborate with product managers and designers to define technical requirements',
                'Optimize application performance and scalability',
                'Participate in on-call rotation and incident response',
                'Drive engineering best practices and continuous improvement initiatives',
            ],
            'required_skills' => [
                'Expert-level proficiency in JavaScript/TypeScript and React',
                'Strong experience with Node.js and backend development',
                'Deep understanding of software design patterns and architecture',
                'Experience with cloud platforms (AWS, GCP, or Azure)',
                'Proficiency with database design and optimization (SQL and NoSQL)',
                'Strong problem-solving and debugging skills',
                'Excellent communication and collaboration abilities',
            ],
            'qualifications' => [
                "Bachelor's degree in Computer Science or related field, or equivalent experience",
                '7+ years of professional software development experience',
                '3+ years of experience with modern JavaScript frameworks',
                'Proven track record of delivering large-scale production systems',
                'Experience leading technical projects and mentoring engineers',
                'Strong understanding of agile development methodologies',
            ],
            'competencies' => [
                'Technical Leadership',
                'System Design',
                'Problem Solving',
                'Communication',
                'Mentorship',
                'Collaboration',
            ],
        ];

        return view('dashboard.job-descriptions.detail', compact('jobDescription'));
    }

    /**
     * Public view for sharing job descriptions without authentication.
     */
    public function publicView($jobId, $slug): View
    {
        // TODO: Backend developer to look up JD by job_id and verify slug
        $jobDescription = (object) [
            'id' => 1,
            'job_id' => $jobId,
            'job_title' => 'Senior Software Engineer',
            'department' => 'Engineering',
            'level' => 'L5 - Senior',
            'location' => 'San Francisco, CA (Hybrid)',
            'employment_type' => 'Full-time',
            'status' => 'published',
            'role_summary' => 'We are seeking a highly skilled Senior Software Engineer to join our dynamic engineering team. In this role, you will be responsible for designing, developing, and maintaining scalable software solutions that power our enterprise platform. You\'ll work closely with cross-functional teams to deliver high-quality products that meet our customers\' needs.',
            'responsibilities' => [
                'Design and implement complex software systems and features',
                'Lead technical discussions and architectural decisions',
                'Mentor junior engineers and conduct code reviews',
                'Collaborate with product managers and designers to define technical requirements',
                'Optimize application performance and scalability',
                'Participate in on-call rotation and incident response',
                'Drive engineering best practices and continuous improvement initiatives',
            ],
            'required_skills' => [
                'Expert-level proficiency in JavaScript/TypeScript and React',
                'Strong experience with Node.js and backend development',
                'Deep understanding of software design patterns and architecture',
                'Experience with cloud platforms (AWS, GCP, or Azure)',
                'Proficiency with database design and optimization (SQL and NoSQL)',
                'Strong problem-solving and debugging skills',
                'Excellent communication and collaboration abilities',
            ],
            'qualifications' => [
                "Bachelor's degree in Computer Science or related field, or equivalent experience",
                '7+ years of professional software development experience',
                '3+ years of experience with modern JavaScript frameworks',
                'Proven track record of delivering large-scale production systems',
                'Experience leading technical projects and mentoring engineers',
                'Strong understanding of agile development methodologies',
            ],
            'competencies' => [
                'Technical Leadership',
                'System Design',
                'Problem Solving',
                'Communication',
                'Mentorship',
                'Collaboration',
            ],
        ];

        return view('dashboard.job-descriptions.public', compact('jobDescription'));
    }

    public function edit($jobDescription): View
    {
        return view('dashboard.job-descriptions.create');
    }

    public function update(Request $request, $jobDescription)
    {
        return redirect()->route('dashboard.job-descriptions.show', $jobDescription);
    }

    public function destroy($jobDescription)
    {
        return redirect()->route('dashboard.job-descriptions.index')
            ->with('success', 'Job description deleted!');
    }

    public function generating($jobDescription): View
    {
        $jobDescription = (object) ['id' => $jobDescription];

        return view('dashboard.job-descriptions.generating', compact('jobDescription'));
    }

    public function validateStep($jobDescription): View
    {
        $jobDescription = (object) ['id' => $jobDescription];
        $validationStats = ['total' => 14, 'aligned' => 11, 'needs_review' => 3];

        return view('dashboard.job-descriptions.validate', compact('jobDescription', 'validationStats'));
    }

    public function review($jobDescription): View
    {
        $jobDescription = (object) [
            'id' => $jobDescription,
            'job_title' => 'Software Engineer',
            'department' => 'Design',
            'level' => 'L8 - Director',
            'location' => 'America USA',
            'employment_type' => 'Full-Time',
            'role_summary' => 'We are seeking a highly skilled professional to join our Design team. In this full-time role based in the specified location, you will play a crucial part in driving innovation and excellence. This position offers an exciting opportunity to work with cutting-edge technologies and collaborate with talented professionals.',
            'responsibilities' => ['Lead the design and development of scalable software solutions', 'Collaborate with cross-functional teams to define technical requirements', 'Mentor junior team members and provide technical guidance', 'Participate in code reviews and ensure best practices', 'Drive continuous improvement in development processes'],
            'required_skills' => ['5+ years of experience in software development', 'Proficiency in modern programming languages (Python, Java, or JavaScript)', 'Strong understanding of software architecture and design patterns', 'Experience with cloud platforms (AWS, Azure, or GCP)', 'Excellent problem-solving and analytical skills'],
            'qualifications' => ["Bachelor's degree in Computer Science or related field", "Master's degree preferred", 'Relevant industry certifications (AWS, Azure, etc.)', 'Proven track record of delivering complex projects'],
            'competencies' => ['Technical Leadership', 'Problem Solving', 'Communication', 'Team Collaboration', 'Innovation'],
        ];

        return view('dashboard.job-descriptions.review', compact('jobDescription'));
    }

    public function publish($jobDescription): View
    {
        $jobDescription = (object) [
            'id' => $jobDescription,
            'job_id' => 'JD-006',
            'job_title' => 'Software Engineer',
            'status' => 'approved',
        ];

        return view('dashboard.job-descriptions.publish', compact('jobDescription'));
    }

    public function submitApproval(Request $request, $jobDescription)
    {
        return redirect()->route('dashboard.job-descriptions.publish', $jobDescription);
    }

    public function saveDraft(Request $request, $jobDescription)
    {
        return redirect()->route('dashboard.job-descriptions.index')
            ->with('success', 'Draft saved!');
    }

    public function regenerateSection(Request $request, $jobDescription)
    {
        return back()->with('success', 'Section regenerated!');
    }

    public function export($jobDescription, $format)
    {
        return back()->with('success', "Exported as {$format}!");
    }
}
