import {z} from 'zod'

export type DeveloperMessage = {id: string, role?: 'developer' | undefined, content: string, name?: (string | null) | undefined, encryptedValue?: (string | null) | undefined} | {[key: string]: unknown};

export type SystemMessage = {id: string, role?: 'system' | undefined, content: string, name?: (string | null) | undefined, encryptedValue?: (string | null) | undefined} | {[key: string]: unknown};

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

export type ToolCall = {id: string, type?: 'function' | undefined, function: FunctionCall, encryptedValue?: (string | null) | undefined} | {[key: string]: unknown};

export type AssistantMessage = {id: string, role?: 'assistant' | undefined, content?: (string | null) | undefined, name?: (string | null) | undefined, encryptedValue?: (string | null) | undefined, toolCalls?: (Array<ToolCall> | null) | undefined} | {[key: string]: unknown};

export type TextInputContent = {type?: 'text' | undefined, text: string} | {[key: string]: unknown};

export type InputContentDataSource = {type?: 'data' | undefined, value: string, mimeType: string} | {[key: string]: unknown};

export type InputContentUrlSource = {type?: 'url' | undefined, value: string, mimeType?: (string | null) | undefined} | {[key: string]: unknown};

export type ImageInputContent = {type?: 'image' | undefined, source: InputContentDataSource | InputContentUrlSource, metadata: unknown} | {[key: string]: unknown};

export type AudioInputContent = {type?: 'audio' | undefined, source: InputContentDataSource | InputContentUrlSource, metadata: unknown} | {[key: string]: unknown};

export type VideoInputContent = {type?: 'video' | undefined, source: InputContentDataSource | InputContentUrlSource, metadata: unknown} | {[key: string]: unknown};

export type DocumentInputContent = {type?: 'document' | undefined, source: InputContentDataSource | InputContentUrlSource, metadata: unknown} | {[key: string]: unknown};

export type BinaryInputContent = {type?: 'binary' | undefined, mimeType: string, id?: (string | null) | undefined, url?: (string | null) | undefined, data?: (string | null) | undefined, filename?: (string | null) | undefined} | {[key: string]: unknown};

export type UserMessage = {id: string, role?: 'user' | undefined, content: string | Array<TextInputContent | ImageInputContent | AudioInputContent | VideoInputContent | DocumentInputContent | BinaryInputContent>, name?: (string | null) | undefined, encryptedValue?: (string | null) | undefined} | {[key: string]: unknown};

export type ToolMessage = {id: string, role?: 'tool' | undefined, content: string, toolCallId: string, error?: (string | null) | undefined, encryptedValue?: (string | null) | undefined} | {[key: string]: unknown};

export type ActivityMessage = {id: string, role?: 'activity' | undefined, activityType: string, content: {[key: string]: unknown}} | {[key: string]: unknown};

export type ReasoningMessage = {id: string, role?: 'reasoning' | undefined, content: string, encryptedValue?: (string | null) | undefined} | {[key: string]: unknown};

export type Tool = {name: string, description: string, parameters: unknown} | {[key: string]: unknown};

export type Context = {description: string, value: string} | {[key: string]: unknown};

export type ResumeEntry = {interruptId: string, status: 'resolved' | 'cancelled', payload: unknown} | {[key: string]: unknown};

export type RunAgentInput = {threadId: string, runId: string, parentRunId?: (string | null) | undefined, state: unknown, messages: Array<DeveloperMessage | SystemMessage | AssistantMessage | UserMessage | ToolMessage | ActivityMessage | ReasoningMessage>, tools: Array<Tool>, context: Array<Context>, forwardedProps: unknown, resume?: (Array<ResumeEntry> | null) | undefined} | {[key: string]: unknown};

export type CreateApiAguiArgs = {body: RunAgentInput};

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

export const createApiAguiResponse = 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
};

/**
 * Run Agent
 * 
 * POST /agui
 */
export const createApiAgui = async (args: CreateApiAguiArgs, options: CreateApiAguiOptions) => {
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 = `${baseUrl.replace(/\/+$/, '')}/agui${query.size > 0 ? `?${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(createApiAguiResponse, await res.json())
};