import {z} from 'zod'

export type GetApiComplianceDashboardArgs = {from?: string | undefined, to?: string | undefined, category?: string | undefined};

export type GetApiComplianceDashboardOptions = {baseUrl?: string | undefined, Bearer?: string | undefined, fetch?: typeof fetch | undefined};

export const dateRangeDto = z.object({from: z.string(), to: z.string()});

export const headlineMetricsDto = z.object({estimateBeforeTreatmentRate: z.union([z.number(), z.string()]).nullable().optional(), consentRecordedRate: z.union([z.number(), z.string()]).nullable().optional(), rxTransparencyRate: z.union([z.number(), z.string()]).nullable().optional(), antimicrobialJustifiedRate: z.union([z.number(), z.string()]).nullable().optional(), cascadeReasonRate: z.union([z.number(), z.string()]).nullable().optional(), ownershipDisclosureComplete: z.boolean().optional(), publicPricingComplete: z.boolean().optional(), cdRegisterVarianceCount: z.union([z.number().int(), z.string()]).optional(), totalEventCount: z.union([z.number().int(), z.string()]).optional(), blockingEventCount: z.union([z.number().int(), z.string()]).optional(), warningEventCount: z.union([z.number().int(), z.string()]).optional()});

export const complianceEventSummaryDto = z.object({id: z.string(), category: z.string(), eventCode: z.string(), severity: z.string(), entityType: z.string(), entityId: z.string(), sourceTable: z.string().nullable().optional(), sourceId: z.string().nullable().optional(), actorUserId: z.string().nullable().optional(), actorName: z.string().nullable().optional(), resultCode: z.string().nullable().optional(), region: z.string(), metadataJson: z.string().nullable().optional(), occurredAt: z.string()});

export const categoryRollupDto = z.object({category: z.string(), total: z.union([z.number().int(), z.string()]).optional(), blocking: z.union([z.number().int(), z.string()]).optional(), warnings: z.union([z.number().int(), z.string()]).optional(), recent: z.array(complianceEventSummaryDto)});

export const complianceDashboardDto = z.object({range: dateRangeDto, headline: headlineMetricsDto, categories: z.array(categoryRollupDto)});

export const validateResponse = async <Output>(
  schema: {
    readonly '~standard': {
      readonly validate: (value: unknown) => ({ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }) | Promise<{ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }>
    }
  },
  value: unknown
): Promise<Output> => {
  const result = await schema['~standard'].validate(value)

  if (result.issues !== undefined) {
    const detail = result.issues
      .map(({ message, path }) =>
        path?.length
          ? `${path.map((segment) => String(typeof segment === 'object' ? segment.key : segment)).join('.')}: ${message}`
          : message
      )
      .join('; ')

    throw new Error(`Response does not match the schema: ${detail}`, { cause: { issues: result.issues } })
  }

  return result.value
};

/**
 * Compliance dashboard rollup. Reads from the unified
 * `compliance_events` projection (PAW-484/PAW-485). Default range
 * when caller omits parameters is "last 30 days". The optional
 * category filter scopes the per-category breakdown
 * only — headline metrics always reflect the full picture in range.
 * 
 * GET /Compliance/dashboard
 */
export const getApiComplianceDashboard = async (args: GetApiComplianceDashboardArgs, options?: GetApiComplianceDashboardOptions) => {
const {baseUrl = "https://api.clinicos.vet/backend/business", fetch: fetchFn = fetch, Bearer} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('accept', "application/json")

if (args.from != null) query.append("from", String(args.from))
if (args.to != null) query.append("to", String(args.to))
if (args.category != null) query.append("category", String(args.category))
if (Bearer !== undefined) headers.set('authorization', `Bearer ${Bearer}`)

const url = `${baseUrl.replace(/\/+$/, '')}/Compliance/dashboard${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "GET", headers})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(complianceDashboardDto, await res.json())
};