import {z} from 'zod'

export type Order = {id: string, pickup: {lat?: number | undefined, lng?: number | undefined}, dropoffs?: (Array<{lat?: number | undefined, lng?: number | undefined}>) | undefined, service_time?: number | undefined, vehicle_preferences?: ({required_all_of_attributes?: Array<{attribute: string, value: string, operator: string}> | undefined, required_any_of_attributes?: Array<{attribute: string, value: string, operator: string}> | undefined, exclude_all_of_attributes?: Array<{attribute: string, value: string, operator: string}> | undefined}) | undefined, priority?: number | undefined, attributes?: Record<string, never> | undefined};

export type Location = {lat: number, lon: number};

export type Vehicle = {id: string, location: Location, attributes?: Record<string, never> | undefined, remaining_waypoints?: Array<Location> | undefined, priority?: number | undefined};

export type CreateApiOptimizationDriverAssignmentV1Args = {key: unknown, body: {orders: Array<Order>, vehicles: Array<Vehicle>, filter: {radius?: number | undefined, pickup_eta?: number | undefined, driving_distance?: number | undefined}, options?: ({travel_cost?: ('driving_eta' | 'driving_distance' | 'straight_line_distance') | undefined, dropoff_details?: boolean | undefined, order_attribute_priority_mappings?: Array<{attribute: string, value: string, operator: string, priority: string}> | undefined, vehicle_attribute_priority_mappings?: Array<{attribute: string, value: string, operator: string, priority: string}> | undefined}) | undefined}};

export type CreateApiOptimizationDriverAssignmentV1Options = {baseUrl?: string | undefined, apiKey?: string | undefined, fetch?: typeof fetch | undefined};

export const location = z.object({lat: z.number().gte(-90).lte(90), lon: z.number().gte(-180).lte(180)});

export const createApiOptimizationDriverAssignmentV1Response = z.object({status: z.number().int().optional(), message: z.string().optional(), result: z.object({trips: z.array(z.object({trip_id: z.string().optional(), vehicle: z.object({id: z.string().optional(), steps: z.object({type: z.enum(["pickup", "dropoff", "ongoing"]).optional(), order_id: z.string().optional(), location: location.optional(), distance: z.number().int().optional(), eta: z.number().int().optional()}).optional(), vehicle_current_location: location.optional()}).optional()})).optional(), unassigned_orders: z.array(z.object({order_id: z.string().optional(), unassigned_reason: z.string().optional()})).optional(), available_vehicles: z.array(z.string()).optional(), alternate_assignments: z.array(z.object({order_id: z.string().optional(), assignments: z.array(z.object({vehicle_id: z.string().optional(), pickup_eta: z.number().int().optional()})).optional()})).optional()}).optional()});

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
};

/**
 * Assign Drivers to Orders
 * 
 * POST /optimization/driver-assignment/v1
 */
export const createApiOptimizationDriverAssignmentV1 = async (args: CreateApiOptimizationDriverAssignmentV1Args, options?: CreateApiOptimizationDriverAssignmentV1Options) => {
const {baseUrl = "https://api.nextbillion.io", fetch: fetchFn = fetch, apiKey} = options ?? {}

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

if (args.key != null) query.append("key", String(args.key))
if (apiKey !== undefined) query.set("key", apiKey)

const url = `${baseUrl.replace(/\/+$/, '')}/optimization/driver-assignment/v1${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

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

return validateResponse(createApiOptimizationDriverAssignmentV1Response, await res.json())
};