import {z} from 'zod'

export type MakeAICall = {assistantType: 'BILLER' | 'CALL_REMINDER' | 'CALL_FOLLOW_UP' | 'CALL_LAB_TECHNICIAN', reasonForCall: string, patientId: string, eventId?: (string | null) | undefined, provider?: ('retell' | 'livekit') | undefined};

export type CreateApiCommsCallAiArgs = {TENANT: string, 'API-KEY': string, body: MakeAICall};

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

export const userType = z.enum(["PROVIDER", "PATIENT", "ASSISTANT"]);

export const userTiny = z.object({id: z.string(), firstName: z.string().nullable().optional(), lastName: z.string().nullable().optional(), phoneNumber: z.string().nullable().optional(), email: z.string().nullable().optional(), type: userType, locationId: z.string().nullable().optional()});

export const callDirection = z.enum(["INBOUND", "OUTBOUND"]);

export const callStatus = z.enum(["CREATED", "ONGOING", "TRANSFERRED", "DISCONNECTED", "FAILED", "FINISHED", "VOICEMAIL"]);

export const toolCall = z.object({id: z.string(), toolName: z.string(), toolArguments: z.object({}), toolCallId: z.string().nullable().optional()});

export const tagSummary = z.object({name: z.string(), description: z.string().nullable().optional(), useForAlerts: z.boolean(), useForCalls: z.boolean(), id: z.string()});

export const callType = z.enum(["MANUAL", "AI"]);

export const callSummary = z.object({id: z.string(), sender: userTiny.nullable().optional(), receiver: userTiny.nullable().optional(), chatId: z.string(), direction: callDirection, status: callStatus, completedDate: z.string().nullable().optional(), retellCallId: z.string().nullable().optional(), disconnectionReason: z.string().nullable().optional(), pathToAudio: z.string().nullable().optional(), summary: z.string().nullable().optional(), context: z.object({}).nullable().optional(), createdDate: z.string().nullable().optional(), toolCalls: z.array(toolCall).optional(), tags: z.array(tagSummary).optional(), invoiceId: z.string().nullable().optional(), type: callType.optional(), locationId: z.string().nullable().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
};

/**
 * Ai Call
 * 
 * POST /comms/call/ai
 */
export const createApiCommsCallAi = async (args: CreateApiCommsCallAiArgs, options: CreateApiCommsCallAiOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

if (args.TENANT != null) headers.set("TENANT", String(args.TENANT))
if (args['API-KEY'] != null) headers.set("API-KEY", String(args['API-KEY']))

const url = `${baseUrl.replace(/\/+$/, '')}/comms/call/ai${query.size > 0 ? `?${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(callSummary, await res.json())
};