import { z } from 'zod'

/**
 * Validation schemas for API routes
 * Implements input validation to prevent injection attacks and invalid data
 */

export const siteIdSchema = z.object({
  siteId: z.string()
    .transform((val) => parseInt(val, 10))
    .pipe(
      z.number()
        .int('Site ID must be an integer')
        .positive('Site ID must be positive')
    )
})

export const periodSchema = z.object({
  period: z.string()
    .regex(/^\d+d$/, 'Period must be in format: 30d, 90d, etc')
    .transform((val) => parseInt(val.replace('d', ''), 10))
    .pipe(
      z.number()
        .int('Days must be an integer')
        .min(1, 'Period must be at least 1 day')
        .max(365, 'Period cannot exceed 365 days')
    )
    .optional()
    .default(30)
})

export type SiteIdInput = z.input<typeof siteIdSchema>
export type SiteIdOutput = z.output<typeof siteIdSchema>
export type PeriodInput = z.input<typeof periodSchema>
export type PeriodOutput = z.output<typeof periodSchema>