import {z} from 'zod'

export type GetApiV1MessagesArgs = {sourceId?: (string | null) | undefined, remoteId?: (string | null) | undefined, threadId?: (string | null) | undefined, participantEmail?: (string | null) | undefined, createdAfter?: (string | null) | undefined, createdBefore?: (string | null) | undefined, cursor?: (string | null) | undefined, limit?: number | undefined};

export type GetApiV1MessagesOptions = {baseUrl?: string | undefined, HTTPBearer?: string | undefined, fetch?: typeof fetch | undefined};

export const messageParty = z.object({name: z.string().nullable().optional(), email: z.string().nullable().optional()});

export const messageListItem = z.object({messageId: z.string(), sourceId: z.string(), remoteId: z.string().nullable(), threadId: z.string().nullable(), subject: z.string().nullable().optional(), sender: messageParty.nullable(), recipients: z.array(messageParty), bodyPreview: z.string(), createdAt: z.string()});

export const paginationInfo = z.object({nextCursor: z.string().nullable().optional(), hasMore: z.boolean().optional()});

export const listMessagesResponse = z.object({messages: z.array(messageListItem), pagination: paginationInfo});

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
};

/**
 * List Messages
 * 
 * GET /v1/messages
 */
export const getApiV1Messages = async (args: GetApiV1MessagesArgs, options?: GetApiV1MessagesOptions) => {
const {baseUrl = "https://api.sybill.ai", fetch: fetchFn = fetch, HTTPBearer} = options ?? {}

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

if (args.sourceId != null) query.append("sourceId", String(args.sourceId))
if (args.remoteId != null) query.append("remoteId", String(args.remoteId))
if (args.threadId != null) query.append("threadId", String(args.threadId))
if (args.participantEmail != null) query.append("participantEmail", String(args.participantEmail))
if (args.createdAfter != null) query.append("createdAfter", String(args.createdAfter))
if (args.createdBefore != null) query.append("createdBefore", String(args.createdBefore))
if (args.cursor != null) query.append("cursor", String(args.cursor))
if (args.limit != null) query.append("limit", String(args.limit))
if (HTTPBearer !== undefined) headers.set('authorization', `Bearer ${HTTPBearer}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/messages${query.size > 0 ? `?${query}` : ''}`

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

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

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