import {z} from 'zod'

export type CreateApiA2aWorkflowsIdV1MessageSendArgs = {id: string};

export type CreateApiA2aWorkflowsIdV1MessageSendOptions = {baseUrl: string, fetch?: typeof fetch | undefined};

export const textPart = z.object({kind: z.literal("text").optional(), metadata: z.record(z.string(), z.unknown()).nullable().optional(), text: z.string()});

export const fileWithBytes = z.object({bytes: z.string(), mimeType: z.string().nullable().optional(), name: z.string().nullable().optional()});

export const fileWithUri = z.object({mimeType: z.string().nullable().optional(), name: z.string().nullable().optional(), uri: z.string()});

export const filePart = z.object({file: z.union([fileWithBytes, fileWithUri]), kind: z.literal("file").optional(), metadata: z.record(z.string(), z.unknown()).nullable().optional()});

export const dataPart = z.object({data: z.record(z.string(), z.unknown()), kind: z.literal("data").optional(), metadata: z.record(z.string(), z.unknown()).nullable().optional()});

export const part = z.union([textPart, filePart, dataPart]);

export const artifact = z.object({artifactId: z.string(), description: z.string().nullable().optional(), extensions: z.array(z.string()).nullable().optional(), metadata: z.record(z.string(), z.unknown()).nullable().optional(), name: z.string().nullable().optional(), parts: z.array(part)});

export const role = z.enum(["agent", "user"]);

export const message = z.object({contextId: z.string().nullable().optional(), extensions: z.array(z.string()).nullable().optional(), kind: z.literal("message").optional(), messageId: z.string(), metadata: z.record(z.string(), z.unknown()).nullable().optional(), parts: z.array(part), referenceTaskIds: z.array(z.string()).nullable().optional(), role: role, taskId: z.string().nullable().optional()});

export const taskState = z.enum(["submitted", "working", "input-required", "completed", "canceled", "failed", "rejected", "auth-required", "unknown"]);

export const taskStatus = z.object({message: message.nullable().optional(), state: taskState, timestamp: z.string().nullable().optional()});

export const task = z.object({artifacts: z.array(artifact).nullable().optional(), contextId: z.string(), history: z.array(message).nullable().optional(), id: z.string(), kind: z.literal("task").optional(), metadata: z.record(z.string(), z.unknown()).nullable().optional(), status: taskStatus});

export const sendMessageSuccessResponse = z.object({id: z.union([z.string(), z.number().int()]).nullable().optional(), jsonrpc: z.literal("2.0").optional(), result: z.union([task, message])});

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
};

/**
 * Run Message Workflow
 * 
 * POST /a2a/workflows/{id}/v1/message:send
 */
export const createApiA2aWorkflowsIdV1MessageSend = async (args: CreateApiA2aWorkflowsIdV1MessageSendArgs, options: CreateApiA2aWorkflowsIdV1MessageSendOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/a2a/workflows/${encodeURIComponent(String(args.id))}/v1/message:send${query.size > 0 ? `?${query}` : ''}`

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

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

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