import {z} from 'zod'

export type ToolCallFunction = {name: string, arguments: {[key: string]: unknown}};

export type ToolCallItem = {id: string, type?: 'function' | undefined, function: ToolCallFunction, isPrecededByText?: (boolean | null) | undefined};

export type VapiCustomer = {number?: (string | null) | undefined, name?: (string | null) | undefined, email?: (string | null) | undefined};

export type VapiCall = {id: string, orgId?: (string | null) | undefined, status?: (string | null) | undefined, assistantId?: (string | null) | undefined, customer?: (VapiCustomer | null) | undefined};

export type VapiModel = {model: string, provider: string, systemPrompt?: (string | null) | undefined, temperature?: (number | null) | undefined};

export type VapiAssistant = {name?: (string | null) | undefined, model?: (VapiModel | null) | undefined, voice?: ({[key: string]: unknown} | null) | undefined, firstMessage?: (string | null) | undefined};

export type ToolCallMessage = {timestamp?: (number | null) | undefined, meta?: ({[key: string]: unknown} | null) | undefined, type: 'tool-calls', toolCalls?: (Array<ToolCallItem> | null) | undefined, toolCallList?: (Array<ToolCallItem> | null) | undefined, toolWithToolCallList?: (Array<{[key: string]: unknown}> | null) | undefined, toolCallId?: (string | null) | undefined, toolName?: (string | null) | undefined, arguments?: ({[key: string]: unknown} | null) | undefined, call?: (VapiCall | null) | undefined, assistant?: (VapiAssistant | null) | undefined} | {[key: string]: unknown};

export type AssistantRequestMessage = {timestamp?: (number | null) | undefined, meta?: ({[key: string]: unknown} | null) | undefined, type: 'assistant-request', call: VapiCall, assistant?: (VapiAssistant | null) | undefined};

export type TranscriptMessage = {timestamp?: (number | null) | undefined, meta?: ({[key: string]: unknown} | null) | undefined, type: 'transcript', role: 'assistant' | 'user', transcript: string, transcriptType?: ('partial' | 'final' | null) | undefined, call: VapiCall};

export type StatusUpdateMessage = {timestamp?: (number | null) | undefined, meta?: ({[key: string]: unknown} | null) | undefined, type: 'status-update', status: string, call: VapiCall};

export type EndOfCallReportMessage = {timestamp?: (number | null) | undefined, meta?: ({[key: string]: unknown} | null) | undefined, type: 'end-of-call-report', call: VapiCall, transcript?: (string | null) | undefined, summary?: (string | null) | undefined, recordingUrl?: (string | null) | undefined, endedReason?: (string | null) | undefined, cost?: (number | null) | undefined, durationSeconds?: (number | null) | undefined};

export type UnknownVapiMessage = {timestamp?: (number | null) | undefined, meta?: ({[key: string]: unknown} | null) | undefined, type: string, raw?: {[key: string]: unknown} | undefined} | {[key: string]: unknown};

export type VapiWebhookRequest = {message: ToolCallMessage | AssistantRequestMessage | TranscriptMessage | StatusUpdateMessage | EndOfCallReportMessage | UnknownVapiMessage};

export type CreateApiApiVapiToolsToolsTestArgs = {body: VapiWebhookRequest};

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

export const createApiApiVapiToolsToolsTestResponse = z.unknown();

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
};

/**
 * Handle Vapi Tools Test
 * 
 * POST /api/vapi/tools/tools-test
 */
export const createApiApiVapiToolsToolsTest = async (args: CreateApiApiVapiToolsToolsTestArgs, options: CreateApiApiVapiToolsToolsTestOptions) => {
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")

const url = `${baseUrl.replace(/\/+$/, '')}/api/vapi/tools/tools-test${query.size > 0 ? `?${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(createApiApiVapiToolsToolsTestResponse, await res.json())
};