import {z} from 'zod'

export type GetApiV1RuleBooksOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const site = z.object({id: z.string().min(1).max(64), name: z.string().min(1).max(200)});

export const reviewer = z.object({name: z.string().min(1).max(200), role: z.string().min(1).max(200).nullable().optional(), user_id: z.string().nullable().optional()});

export const versionState = z.enum(["draft", "published", "superseded", "discarded"]);

export const actorType = z.enum(["person", "agent", "integration"]);

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

export const actorAt = z.object({actor: actor, at: z.string()});

export const versionSummary = z.object({id: z.string(), number: z.number().int(), state: versionState, summary: z.string().nullable(), published: actorAt.nullable()});

export const draftSummary = z.object({id: z.string(), number: z.number().int(), etag: z.string(), opened: actorAt, parent_version_number: z.number().int().nullable()});

export const strategyUse = z.object({strategy_id: z.string(), strategy_name: z.string().nullable()});

export const versionRef = z.object({id: z.string(), number: z.number().int(), state: versionState});

export const inNashCounts = z.object({must: z.number().int(), aim_for: z.number().int(), report: z.number().int(), not_in_nash: z.number().int()});

export const statusCounts = z.object({confirmed: z.number().int(), assumed: z.number().int(), needs_answer: z.number().int()});

export const ruleBookCounts = z.object({version: versionRef.nullable(), rules: z.number().int(), by_in_nash: inNashCounts, by_status: statusCounts});

export const ruleBookRead = z.object({id: z.string(), name: z.string(), description: z.string().nullable(), sites: z.array(site), reviewers: z.array(reviewer), current_version: versionSummary.nullable(), draft: draftSummary.nullable(), used_by: z.array(strategyUse), counts: ruleBookCounts, created: actorAt, updated_at: z.string().nullable()});

export const ruleBookList = z.object({rule_books: z.array(ruleBookRead)});

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 Rule Books
 * 
 * GET /v1/rule-books
 */
export const getApiV1RuleBooks = async (options?: GetApiV1RuleBooksOptions) => {
const {baseUrl = "https://api.sandbox.usenash.com", fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/v1/rule-books${query.size > 0 ? `?${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(ruleBookList, await res.json())
};