'use server';

import sql from '@/lib/db';
import { cookies } from 'next/headers';
import { redirect } from 'next/navigation';

export async function login(prevState: any, formData: FormData) {
    const password = formData.get('password') as string;
    if (password === process.env.ADMIN_PASSWORD) {
        const cookieStore = await cookies();
        cookieStore.set('admin_session', 'authenticated', {
            httpOnly: true,
            secure: process.env.NODE_ENV === 'production',
            maxAge: 60 * 60 * 24 * 7, // 1 week
            path: '/',
        });
        redirect('/admin');
    }
    return { error: 'Hatalı şifre' };
}

export async function logout() {
    const cookieStore = await cookies();
    cookieStore.delete('admin_session');
    redirect('/admin/login');
}

export async function getDashboardStats() {
    try {
        const [leadsCount] = await sql`SELECT count(*) FROM leads`;
        const [projectsCount] = await sql`SELECT count(*) FROM projects`;
        const [servicesCount] = await sql`SELECT count(*) FROM services`;
        
        return {
            leads: Number(leadsCount.count),
            projects: Number(projectsCount.count),
            services: Number(servicesCount.count),
        };
    } catch (e) {
        return { leads: 0, projects: 0, services: 0 };
    }
}

export async function getLeadsAdmin() {
    try {
        return await sql`SELECT * FROM leads ORDER BY created_at DESC`;
    } catch (e) {
        return [];
    }
}

export async function deleteLead(id: number) {
    try {
        await sql`DELETE FROM leads WHERE id = ${id}`;
        return { success: true };
    } catch (e) {
        return { error: 'Silinemedi' };
    }
}

export async function updateSettings(formData: FormData) {
    try {
        const data = {
            site_name: formData.get('site_name') as string,
            site_description: formData.get('site_description') as string,
            office_address: formData.get('office_address') as string,
            contact_email: formData.get('contact_email') as string,
            contact_phone: formData.get('contact_phone') as string,
            instagram_url: formData.get('instagram_url') as string,
            twitter_url: formData.get('twitter_url') as string,
            linkedin_url: formData.get('linkedin_url') as string,
            status_badge_text: formData.get('status_badge_text') as string,
        };

        await sql`
            UPDATE settings SET
                site_name = ${data.site_name},
                site_description = ${data.site_description},
                office_address = ${data.office_address},
                contact_email = ${data.contact_email},
                contact_phone = ${data.contact_phone},
                instagram_url = ${data.instagram_url},
                twitter_url = ${data.twitter_url},
                linkedin_url = ${data.linkedin_url},
                status_badge_text = ${data.status_badge_text},
                updated_at = CURRENT_TIMESTAMP
            WHERE id = 1
        `;
        return { success: true };
    } catch (e) {
        return { error: 'Güncellenemedi' };
    }
}

export async function getProjectsAdmin() {
    try {
        return await sql`SELECT * FROM projects ORDER BY created_at DESC`;
    } catch (e) {
        return [];
    }
}

export async function getProjectByIdAdmin(id: number) {
    try {
        const result = await sql`SELECT * FROM projects WHERE id = ${id}`;
        return result[0];
    } catch (e) {
        return null;
    }
}

export async function deleteProject(id: number) {
    try {
        await sql`DELETE FROM projects WHERE id = ${id}`;
        return { success: true };
    } catch (e) {
        return { error: 'Silinemedi' };
    }
}

export async function createProjectAdmin(formData: FormData) {
    try {
        const slug = formData.get('slug') as string;
        const title = formData.get('title') as string;
        const subtitle = formData.get('subtitle') as string;
        const year = formData.get('year') as string;
        const hero_image = formData.get('hero_image') as string;
        const client = formData.get('client') as string;
        const role = formData.get('role') as string;
        const location = formData.get('location') as string;
        const narrative_title = formData.get('narrative_title') as string;
        const narrative_desc = formData.get('narrative_desc') as string;
        const is_featured = formData.get('is_featured') === 'on';

        const categoriesRaw = formData.getAll('category') as string[];
        const techStackRaw = formData.get('tech_stack') as string;
        const galleryRaw = formData.get('gallery') as string;

        const category = JSON.stringify(categoriesRaw.filter(Boolean));
        const tech_stack = JSON.stringify(techStackRaw ? techStackRaw.split(/[\n,]/).map(s => s.trim()).filter(Boolean) : []);
        const gallery = JSON.stringify(galleryRaw ? galleryRaw.split(/[\n,]/).map(s => s.trim()).filter(Boolean) : []);

        await sql`
            INSERT INTO projects (
                slug, title, subtitle, category, year, hero_image, client, role, location, 
                narrative_title, narrative_desc, is_featured, tech_stack, gallery
            ) VALUES (
                ${slug}, ${title}, ${subtitle}, ${category}::jsonb, ${year}, ${hero_image}, ${client}, ${role}, ${location},
                ${narrative_title}, ${narrative_desc}, ${is_featured}, ${tech_stack}::jsonb, ${gallery}::jsonb
            )
        `;
        return { success: true };
    } catch (e: any) {
        console.error('Error creating project:', e);
        return { error: 'Ekleme başarısız: ' + (e.message || 'Bilinmeyen hata') };
    }
}

export async function updateProjectAdmin(id: number, formData: FormData) {
    try {
        const slug = formData.get('slug') as string;
        const title = formData.get('title') as string;
        const subtitle = formData.get('subtitle') as string;
        const year = formData.get('year') as string;
        const hero_image = formData.get('hero_image') as string;
        const client = formData.get('client') as string;
        const role = formData.get('role') as string;
        const location = formData.get('location') as string;
        const narrative_title = formData.get('narrative_title') as string;
        const narrative_desc = formData.get('narrative_desc') as string;
        const is_featured = formData.get('is_featured') === 'on';

        const categoriesRaw = formData.getAll('category') as string[];
        const techStackRaw = formData.get('tech_stack') as string;
        const galleryRaw = formData.get('gallery') as string;

        const category = JSON.stringify(categoriesRaw.filter(Boolean));
        const tech_stack = JSON.stringify(techStackRaw ? techStackRaw.split(/[\n,]/).map(s => s.trim()).filter(Boolean) : []);
        const gallery = JSON.stringify(galleryRaw ? galleryRaw.split(/[\n,]/).map(s => s.trim()).filter(Boolean) : []);

        await sql`
            UPDATE projects SET
                slug = ${slug}, title = ${title}, subtitle = ${subtitle}, category = ${category}::jsonb, 
                year = ${year}, hero_image = ${hero_image}, client = ${client}, role = ${role}, 
                location = ${location}, narrative_title = ${narrative_title}, 
                narrative_desc = ${narrative_desc}, is_featured = ${is_featured}, 
                tech_stack = ${tech_stack}::jsonb, gallery = ${gallery}::jsonb
            WHERE id = ${id}
        `;
        return { success: true };
    } catch (e: any) {
        console.error('Error updating project:', e);
        return { error: 'Güncelleme başarısız: ' + (e.message || 'Bilinmeyen hata') };
    }
}

export async function getServicesAdmin() {
    try {
        return await sql`SELECT * FROM services ORDER BY display_order ASC`;
    } catch (e) {
        return [];
    }
}

export async function deleteService(id: number) {
    try {
        await sql`DELETE FROM services WHERE id = ${id}`;
        return { success: true };
    } catch (e) {
        return { error: 'Silinemedi' };
    }
}

export async function getPartnersAdmin() {
    try {
        return await sql`SELECT * FROM partners ORDER BY display_order ASC`;
    } catch (e) {
        return [];
    }
}

export async function deletePartner(id: number) {
    try {
        await sql`DELETE FROM partners WHERE id = ${id}`;
        return { success: true };
    } catch (e) {
        return { error: 'Silinemedi' };
    }
}

export async function createPartnerAdmin(formData: FormData) {
    try {
        const name = formData.get('name') as string;
        const logo = formData.get('logo') as string;
        const display_order = Number(formData.get('display_order')) || 0;

        await sql`
            INSERT INTO partners (name, logo, display_order)
            VALUES (${name}, ${logo}, ${display_order})
        `;
        return { success: true };
    } catch (e: any) {
        console.error('Error creating partner:', e);
        return { error: 'Ekleme başarısız: ' + (e.message || 'Bilinmeyen hata') };
    }
}

export async function updatePartner(id: number, name: string, display_order: number) {
    try {
        await sql`
            UPDATE partners 
            SET name = ${name}, display_order = ${display_order} 
            WHERE id = ${id}
        `;
        return { success: true };
    } catch (e) {
        return { error: 'Güncellenemedi' };
    }
}