import {z} from 'zod'

export type ChatCompletionRequest = {message: string, file_ids?: Array<string> | undefined, playbook_ids?: Array<string> | undefined, playbook_id?: string | undefined, skill_ids?: Array<string> | undefined, blocked_tools?: Array<string> | undefined, auto_accept?: boolean | undefined, chat_id?: string | undefined, project_id?: string | undefined, materialize?: boolean | undefined, company_id?: string | undefined, vault_id?: string | undefined};

export type CreateApiChatCompletionsArgs = {wait?: (number | null) | undefined, Prefer?: string | undefined, body: ChatCompletionRequest};

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

export const apiDocument = z.object({file_id: z.string(), original_file_id: z.string().optional(), filename: z.string(), original_filename: z.string().optional(), signed_url: z.string(), download_url: z.string()});

export const apiEmail = z.object({to: z.string(), cc: z.string().optional(), bcc: z.string().optional(), subject: z.string(), body: z.string(), plaintext_body: z.string()});

export const apiDiagram = z.object({title: z.string(), diagram_type: z.string(), mermaid: z.string()});

export const chatCompletionResult = z.object({result: z.string(), chat_id: z.string(), chat_url: z.string().optional(), documents: z.array(apiDocument).optional(), emails: z.array(apiEmail).optional(), diagrams: z.array(apiDiagram).optional(), judge_approved_steps: z.array(z.string()).optional(), skipped_steps: z.array(z.string()).optional()}).nullable();

export const chatCompletionResponse = z.object({job_id: z.string(), kind: z.literal("chat/completions"), status: z.enum(["pending", "running", "succeeded", "failed", "canceled"]), result: chatCompletionResult, error: z.object({code: z.string(), message: z.string()}).nullable(), created_at: z.string(), completed_at: z.string().nullable()});

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
};

/**
 * Create chat completion
 * 
 * POST /chat/completions
 */
export const createApiChatCompletions = async (args: CreateApiChatCompletionsArgs, options?: CreateApiChatCompletionsOptions) => {
const {baseUrl = "https://app.gc.ai/api/external/v1", fetch: fetchFn = fetch, ApiKeyAuth} = options ?? {}

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

if (args.wait != null) query.append("wait", String(args.wait))
if (args.Prefer != null) headers.set("Prefer", String(args.Prefer))
if (ApiKeyAuth !== undefined) headers.set("Authorization", ApiKeyAuth)

const url = `${baseUrl.replace(/\/+$/, '')}/chat/completions${query.size > 0 ? `?${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(chatCompletionResponse, await res.json())
};