import { z } from 'zod';
import { addressSchema } from '@/schemas/address';
import { backendOrganizationSchema } from '@/schemas/backend/organization';
import { businessFocusOptionsSchema } from '@/schemas/businessFocus';
import { resourceCategorySchema } from '@/schemas/category';
import { coordinateSchema, nameSchema, optionalUrlSchema, yearSchema } from '@/schemas/common';
import { getContactSchema } from '@/schemas/contact';
import { organizationSubtypeSchema } from '@/schemas/organizationSubtype';

type TFunction = (key: string, replacements?: { [key: string]: string | number }) => string;

/**
 * User-friendly need schema for the form
 * Maps to ResourceFlow with direction='input' in the backend
 * Uses Zod v4's improved string validation
 */
export const getFormNeedSchema = (t: TFunction) =>
  z.object({
    resource_name: z
      .string()
      .trim()
      .min(1, { message: t('validation.resource.name_min') }),
    category: resourceCategorySchema.optional(),
    quantity: z
      .string()
      .max(50, { message: t('validation.resource.quantity_max') })
      .optional()
      .describe('Quantity description'),
    description: z
      .string()
      .max(200, { message: t('validation.resource.description_max') })
      .optional()
      .describe('Additional description'),
  });

/**
 * User-friendly offer schema for the form
 * Maps to ResourceFlow with direction='output' in the backend
 * Uses Zod v4's improved string validation
 */
export const getFormOfferSchema = (t: TFunction) =>
  z.object({
    resource_name: z
      .string()
      .trim()
      .min(1, { message: t('validation.resource.name_min') }),
    category: resourceCategorySchema.optional(),
    quantity: z
      .string()
      .max(50, { message: t('validation.resource.quantity_max') })
      .optional()
      .describe('Quantity description'),
    description: z
      .string()
      .max(200, { message: t('validation.resource.description_max') })
      .optional()
      .describe('Additional description'),
  });

/**
 * Organization form schema - user-friendly interface
 * Uses "needs" and "offers" (business-friendly terms)
 * These will be converted to ResourceFlows (backend technical terms) when submitting
 *
 * Uses Zod v4's composition features and common schemas for DRY code
 */
export const getOrganizationFormSchema = (t: TFunction) =>
  z.object({
    name: nameSchema.min(2, { message: t('validation.string.min2') }),
    sector: z
      .string()
      .min(1, { message: t('validation.string.min1') })
      .describe('Business sector'),
    description: z
      .string()
      .min(10, { message: t('validation.string.min10') })
      .describe('Organization description'),
    subtype: organizationSubtypeSchema.optional(),
    legal_form: z.enum(['LLC', 'corporation', 'sole_proprietorship']).describe('Legal form'),
    company_registration_number: z
      .string()
      .regex(/^(\d{10}|\d{13})?$/, { message: t('validation.string.regex') })
      .optional()
      .describe('Company registration number (10 or 13 digits)'),
    website: z
      .string()
      .url({ message: t('validation.string.url') })
      .or(z.literal(''))
      .optional(),
    primary_contact: getContactSchema(t),
    company_size: z.coerce
      .number()
      .int()
      .min(1, { message: t('validation.number.min1') })
      .describe('Company size (number of employees)'),
    founding_year: yearSchema
      .min(1800, { message: t('validation.number.min1800') })
      .max(new Date().getFullYear(), { message: t('validation.number.max') }),
    business_focus: z
      .array(businessFocusOptionsSchema)
      .min(1, { message: t('validation.array.min1') })
      .describe('Business focus areas'),
    industries: z.array(z.string()).optional().describe('Industries'),
    tags: z.array(z.string()).optional().describe('Tags'),
    // User-friendly: "needs" and "offers"
    // Backend: These will be converted to ResourceFlows with direction='input' and direction='output'
    needs: z.array(getFormNeedSchema(t)).optional().describe('Resource needs'),
    offers: z.array(getFormOfferSchema(t)).optional().describe('Resource offers'),
    logoUrl: optionalUrlSchema,
    galleryImages: z.array(optionalUrlSchema).optional().default([]).describe('Array of gallery image URLs'),
    address: addressSchema.optional(),
    location: coordinateSchema.describe('Geographic location'),
  });

// For backwards compatibility and non-form usage
export const organizationFormSchema = getOrganizationFormSchema((key: string) => key);

/**
 * Organization schema for validation
 * Alias to backendOrganizationSchema for backwards compatibility
 * @deprecated Use backendOrganizationSchema from '@/schemas/backend/organization' for new code
 */
export const organizationSchema = backendOrganizationSchema;