import {z} from 'zod'

export type GetApiApiCustomFieldsArgs = {object_type: 'Ticket' | 'Customer', search?: string | undefined, archived?: boolean | undefined, order_by?: ('priority:asc' | 'priority:desc') | undefined, cursor?: string | undefined, limit?: number | undefined};

export type GetApiApiCustomFieldsOptions = {baseUrl?: string | undefined, basicAuth?: {username: string, password: string} | undefined, fetch?: typeof fetch | undefined};

export const objectType = z.enum(["Ticket", "Customer"]);

export const requirementType = z.enum(["visible", "required", "conditional"]);

export const managedTicketFieldType = z.enum(["contact_reason", "product", "resolution", "ai_intent", "ai_outcome", "ai_sales", "ai_discount", "ai_journey", "managed_sentiment", "call_status"]);

export const managedCustomerFieldType = z.literal("customer_type");

export const textInputSettings = z.object({input_type: z.literal("input"), placeholder: z.string().max(1024).optional()});

export const dropdownInputSettingsSettings = z.object({input_type: z.literal("dropdown"), choices: z.array(z.string()), default: z.string().optional()});

export const textDataTypeDefinition = z.object({data_type: z.literal("text"), input_settings: z.discriminatedUnion("input_type", [textInputSettings, dropdownInputSettingsSettings])});

export const numberInputSettings = z.object({input_type: z.literal("input_number"), placeholder: z.string().max(1024).optional(), min: z.union([z.number(), z.string()]).optional(), max: z.union([z.number(), z.string()]).optional()});

export const numberDataTypeDefinition = z.object({data_type: z.literal("number"), input_settings: numberInputSettings});

export const booleanDropdownInputSettings = z.object({input_type: z.literal("dropdown"), choices: z.array(z.boolean()).optional(), default: z.boolean().optional()});

export const booleanDataTypeDefinition = z.object({data_type: z.literal("boolean"), input_settings: booleanDropdownInputSettings});

export const customField = z.object({id: z.number().int(), external_id: z.string().optional(), object_type: objectType, label: z.string().max(255), description: z.string().max(1024).optional(), priority: z.number().int().gte(0), required: z.boolean(), requirement_type: requirementType, managed_type: z.union([managedTicketFieldType, managedCustomerFieldType]).optional(), definition: z.discriminatedUnion("data_type", [textDataTypeDefinition, numberDataTypeDefinition, booleanDataTypeDefinition]), created_datetime: z.string(), updated_datetime: z.string(), deactivated_datetime: z.string().optional()});

export const cursorPaginationMeta = z.object({prev_cursor: z.string(), next_cursor: z.string(), total_resources: z.number().int()});

export const getApiApiCustomFieldsResponse = z.object({object: z.string(), uri: z.string(), data: z.array(customField), meta: cursorPaginationMeta});

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 custom fields
 * 
 * GET /api/custom-fields
 */
export const getApiApiCustomFields = async (args: GetApiApiCustomFieldsArgs, options?: GetApiApiCustomFieldsOptions) => {
const {baseUrl = "https://your-domain.gorgias.com", fetch: fetchFn = fetch, basicAuth} = options ?? {}

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

if (args.object_type != null) query.append("object_type", String(args.object_type))
if (args.search != null) query.append("search", String(args.search))
if (args.archived != null) query.append("archived", String(args.archived))
if (args.order_by != null) query.append("order_by", String(args.order_by))
if (args.cursor != null) query.append("cursor", String(args.cursor))
if (args.limit != null) query.append("limit", String(args.limit))
if (basicAuth !== undefined) headers.set('authorization', `Basic ${btoa(`${basicAuth.username}:${basicAuth.password}`)}`)

const url = `${baseUrl.replace(/\/+$/, '')}/api/custom-fields${query.size > 0 ? `?${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(getApiApiCustomFieldsResponse, await res.json())
};