import {z} from 'zod'

export type GroupInfoRequest = {group_id: number};

export type CreateApiGnimbusAllIterationsArgs = {body: GroupInfoRequest};

export type CreateApiGnimbusAllIterationsOptions = {baseUrl: string, OAuth2PasswordBearer?: string | undefined, fetch?: typeof fetch | undefined};

export const referencePoint = z.object({preference_type: z.literal("reference_point").optional(), aspiration_levels: z.record(z.string(), z.number())});

export const optimizationPreference = z.object({method: z.string().optional(), phase: z.string().optional(), set_preferences: z.record(z.string(), referencePoint)});

export const votingPreference = z.object({method: z.string().optional(), set_preferences: z.record(z.string(), z.number().int())});

export const endProcessPreference = z.object({method: z.string().optional(), success: z.boolean().nullable(), set_preferences: z.record(z.string(), z.boolean())});

export const stateDB = z.object({id: z.number().int().nullable().optional(), problem_id: z.number().int().nullable().optional(), session_id: z.number().int().nullable().optional(), parent_id: z.number().int().nullable().optional(), state_id: z.number().int().nullable().optional()});

export const tensor: z.ZodType<Tensor> = z.union([z.array(z.lazy(() => tensor)), z.array(z.union([z.number(), z.number().int(), z.boolean()])), z.number(), z.number().int(), z.boolean(), z.literal("List")]).nullable();

export const solutionReference = z.object({name: z.string().nullable().optional(), solution_index: z.number().int().nullable().optional(), state: stateDB, objective_values_all: z.array(z.record(z.string(), z.number())), variable_values_all: z.array(z.record(z.string(), z.union([z.number(), z.number().int(), z.boolean(), tensor]))), objective_values: z.record(z.string(), z.number()).nullable(), variable_values: z.record(z.string(), z.union([z.number(), z.number().int(), z.boolean()])).nullable(), state_id: z.number().int(), num_solutions: z.number().int()});

export const fullIteration = z.object({phase: z.string(), optimization_preferences: optimizationPreference.nullable(), voting_preferences: z.union([votingPreference, endProcessPreference]).nullable(), starting_result: solutionReference.nullable(), common_results: z.array(solutionReference), user_results: z.array(solutionReference), personal_result_index: z.number().int().nullable(), final_result: solutionReference.nullable()});

export const gNIMBUSAllIterationsResponse = z.object({all_full_iterations: z.array(fullIteration)});

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
};

/**
 * Full Iteration
 * 
 * POST /gnimbus/all_iterations
 * 
 * Also accepts auth: APIKeyCookie
 */
export const createApiGnimbusAllIterations = async (args: CreateApiGnimbusAllIterationsArgs, options: CreateApiGnimbusAllIterationsOptions) => {
const {baseUrl, fetch: fetchFn = fetch, OAuth2PasswordBearer} = options ?? {}

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

if (OAuth2PasswordBearer !== undefined) headers.set('authorization', `Bearer ${OAuth2PasswordBearer}`)

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

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