import {z} from 'zod'

export type FlowGraph = {nodes?: (Array<{id: string, componentId?: string | undefined, credentials_id?: string | undefined, function?: string | undefined, name?: string | undefined, description?: string | undefined, fields?: Record<string, never> | undefined}>) | undefined, edges?: (Array<{id?: string | undefined, config?: ({condition?: string | undefined, mapper?: Record<string, never> | undefined}) | undefined, source: string, target: string}>) | undefined};

export type Owner = {id: string, type: string};

export type MutableFlowTemplate = {name: string, description?: string | undefined, graph: FlowGraph, type: 'ordinary' | 'realtime', cron?: string | undefined, owners?: Array<Owner> | undefined};

export type PatchApiTemplatesIdArgs = {id: unknown, body: MutableFlowTemplate};

export type PatchApiTemplatesIdOptions = {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 flowTemplate = z.object({name: z.string(), description: 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(["published", "draft"]).optional(), createdAt: z.string(), updatedAt: z.string()});

export const patchApiTemplatesIdResponse = z.object({data: flowTemplate.optional(), meta: z.object({}).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
};

/**
 * Update an existing flow template
 * 
 * PATCH /templates/{id}
 */
export const patchApiTemplatesId = async (args: PatchApiTemplatesIdArgs, options?: PatchApiTemplatesIdOptions) => {
const {baseUrl = "http://template-repository.openintegrationhub.com", fetch: fetchFn = fetch, Bearer} = options ?? {}

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

if (Bearer !== undefined) headers.set('authorization', `Bearer ${Bearer}`)

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

const res = await fetchFn(url, {method: "PATCH", 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(patchApiTemplatesIdResponse, await res.json())
};