import {z} from 'zod'

export type GetApiFormsFormPathArgs = {TENANT: string, 'API-KEY': string, form_path: string, patient_id: string};

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

export const blockType = z.enum(["DYNAMIC", "DEMOGRAPHICS", "INSURANCE", "PAYMENT_METHODS", "MEDICAL_HISTORY"]);

export const questionType = z.enum(["ADDRESS", "DATE", "TEXT", "NUMBER", "TEXT_AREA", "SINGLE_SELECT", "RADIAL_SINGLE_SELECT", "MULTI_SELECT", "RADIAL_MULTI_SELECT", "TOGGLE", "SIGNATURE", "FILE_UPLOAD", "PHONE_NUMBER", "EMAIL", "PAYMENT_METHOD", "TAG", "DISCLAIMER", "STATEMENT", "DOCUMENT", "FEET_INCHES_HEIGHT", "POUNDS_WEIGHT", "CALCULATED_SCORE"]);

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

export const conditionOperator = z.enum(["EQUALS", "NOT_EQUALS", "CONTAINS", "YEARS_AGO_MINIMUM", "YEARS_AGO_MAXIMUM", "SUM"]);

export const questionConditionDetail = z.object({id: z.string(), questionId: z.string(), dependentQuestionId: z.string(), operator: conditionOperator, value: z.string(), groupId: z.string().nullable().optional()});

export const questionDetailOutput = z.object({id: z.string(), blockId: z.string(), formId: z.string(), position: z.number().int(), questionType: questionType, required: z.boolean(), isArchived: z.boolean().optional(), mappingKey: z.string().nullable().optional(), data: questionData, conditions: z.array(questionConditionDetail).optional()});

export const answerDetail = z.object({question: questionDetailOutput.nullable().optional(), data: z.union([z.string(), z.boolean(), z.array(z.string()), z.record(z.string(), z.string().nullable()), z.number()]).nullable().optional()});

export const answeredBlockDetail = z.object({blockType: blockType, name: z.string(), position: z.number().int(), description: z.string().nullable().optional(), id: z.string(), answers: z.array(answerDetail)});

export const answeredFormDetail = z.object({id: z.string(), name: z.string(), description: z.string().nullable().optional(), patientId: z.string().nullable(), blocks: z.array(answeredBlockDetail), completed: z.boolean().nullable().optional(), isCompleted: z.boolean().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
};

/**
 * Get Form
 * 
 * GET /forms/{form_path}
 */
export const getApiFormsFormPath = async (args: GetApiFormsFormPathArgs, options: GetApiFormsFormPathOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

if (args.TENANT != null) headers.set("TENANT", String(args.TENANT))
if (args['API-KEY'] != null) headers.set("API-KEY", String(args['API-KEY']))
if (args.patient_id != null) query.append("patient_id", String(args.patient_id))

const url = `${baseUrl.replace(/\/+$/, '')}/forms/${encodeURIComponent(String(args.form_path))}${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(answeredFormDetail, await res.json())
};