import {z} from 'zod'

export type GetApiFlowsArgs = {'page[size]'?: number | undefined, 'page[number]'?: number | undefined, 'filter[status]'?: string | undefined, 'filter[type]'?: string | undefined, 'filter[user]'?: string | undefined, sort?: string | undefined, search?: string | undefined};

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

export const flowGraph = z.object({nodes: z.array(z.object({id: z.string(), componentId: z.string().optional(), credentials_id: z.string().optional(), function: z.string().optional(), name: z.string().optional(), description: z.string().optional(), fields: z.object({}).optional()})).optional(), edges: z.array(z.object({id: z.string().optional(), config: z.object({condition: z.string().optional(), mapper: z.object({}).optional()}).optional(), source: z.string(), target: z.string()})).optional()});

export const owner = z.object({id: z.string(), type: z.string()});

export const flow = z.object({name: z.string(), description: z.string().optional(), tenant: z.string().optional(), graph: flowGraph, type: z.enum(["ordinary", "realtime"]), cron: z.string().optional(), owners: z.array(owner).optional(), id: z.string(), status: z.enum(["active", "inactive", "starting", "stopping"]).optional(), createdAt: z.string(), updatedAt: z.string()});

export const meta = z.object({page: z.number().int().optional(), perPage: z.number().int().optional(), total: z.number().int().optional(), totalPages: z.number().int().optional()});

export const getApiFlowsResponse = z.object({data: z.array(flow).optional(), meta: meta.optional()});

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
};

/**
 * Retrieve all flows associated with the current user from the repository
 * 
 * GET /flows
 */
export const getApiFlows = async (args: GetApiFlowsArgs, options?: GetApiFlowsOptions) => {
const {baseUrl = "http://flow-repository.openintegrationhub.com", fetch: fetchFn = fetch, Bearer} = options ?? {}

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

if (args['page[size]'] != null) query.append("page[size]", String(args['page[size]']))
if (args['page[number]'] != null) query.append("page[number]", String(args['page[number]']))
if (args['filter[status]'] != null) query.append("filter[status]", String(args['filter[status]']))
if (args['filter[type]'] != null) query.append("filter[type]", String(args['filter[type]']))
if (args['filter[user]'] != null) query.append("filter[user]", String(args['filter[user]']))
if (args.sort != null) query.append("sort", String(args.sort))
if (args.search != null) query.append("search", String(args.search))
if (Bearer !== undefined) headers.set('authorization', `Bearer ${Bearer}`)

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