import {z} from 'zod'

export type TimeZone = number;

export type RepositoryID = string;

export type RepositorySet = Array<RepositoryID>;

export type PullRequestEvent = 'created' | 'committed' | 'review_requested' | 'reviewed' | 'approved' | 'changes_requested' | 'merged' | 'released' | 'rejected' | 'deployed';

export type PullRequestStage = 'wip' | 'reviewing' | 'merging' | 'releasing' | 'force_push_dropped' | 'done' | 'release_ignored' | 'deployed';

export type DeveloperID = string;

export type DeveloperSet = Array<DeveloperID>;

export type PullRequestWith = {author?: DeveloperSet | undefined, reviewer?: DeveloperSet | undefined, commit_author?: DeveloperSet | undefined, commit_committer?: DeveloperSet | undefined, commenter?: DeveloperSet | undefined, merger?: DeveloperSet | undefined, releaser?: DeveloperSet | undefined};

export type JIRAStatusCategory = 'To Do' | 'In Progress' | 'Done' | 'No Category';

export type JIRAFilter = {epics?: Array<string> | undefined, labels_include?: Array<string> | undefined, labels_exclude?: Array<string> | undefined, issue_types?: Array<string> | undefined, priorities?: Array<string> | undefined, projects?: Array<string> | undefined, status_categories?: Array<JIRAStatusCategory> | undefined, unmapped?: boolean | undefined};

export type FilterPullRequestsRequest = {account: number, date_from: string, date_to: string, timezone?: TimeZone | undefined, in: RepositorySet, events?: Array<PullRequestEvent> | undefined, stages?: Array<PullRequestStage> | undefined, with?: PullRequestWith | undefined, labels_include?: Array<string> | undefined, labels_exclude?: Array<string> | undefined, exclude_inactive: boolean, jira?: JIRAFilter | undefined, updated_from?: string | undefined, updated_to?: string | undefined, limit?: (number | null) | undefined, environments?: Array<string> | undefined};

export type PaginatePullRequestsRequest = {batch: number, request: FilterPullRequestsRequest};

export type CreateApiPaginatePullRequestsArgs = {body: PaginatePullRequestsRequest};

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

export const pullRequestPaginationPlan = z.object({updated: z.array(z.string()).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
};

/**
 * Compute the balanced pagination plan for `/filter/pull_requests`.
 * 
 * POST /paginate/pull_requests
 * 
 * Also accepts auth: apiKeyAuth
 */
export const createApiPaginatePullRequests = async (args: CreateApiPaginatePullRequestsArgs, options: CreateApiPaginatePullRequestsOptions) => {
const {baseUrl, fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/paginate/pull_requests${query.size > 0 ? `?${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(pullRequestPaginationPlan, await res.json())
};