import {z} from 'zod'

export type GetApiApiV1SessionsSessionIdPrPrNumberFilesArgs = {sessionId: string, prNumber: number, sourceUrl?: string | undefined};

export type GetApiApiV1SessionsSessionIdPrPrNumberFilesOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const workspaceFileSummary = z.object({additions: z.number().int(), binary: z.boolean(), deletions: z.number().int(), editable: z.boolean(), fileFingerprint: z.string(), path: z.string(), previousPath: z.string().optional(), size: z.number().int(), status: z.enum(["unmodified", "modified", "added", "deleted", "renamed"])});

export const workspaceCommitSummary = z.object({author: z.string(), files: z.array(workspaceFileSummary), sha: z.string(), subject: z.string(), timestamp: z.string()});

export const workspaceSummary = z.object({additions: z.number().int(), deletions: z.number().int(), files: z.number().int()});

export const listPRFilesResponse = z.object({commits: z.array(workspaceCommitSummary), commitsTruncated: z.boolean().optional(), files: z.array(workspaceFileSummary), sessionId: z.string(), summary: workspaceSummary, truncated: z.boolean()});

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 the exact base-to-head changed files for an associated pull request
 * 
 * GET /api/v1/sessions/{sessionId}/pr/{prNumber}/files
 */
export const getApiApiV1SessionsSessionIdPrPrNumberFiles = async (args: GetApiApiV1SessionsSessionIdPrPrNumberFilesArgs, options?: GetApiApiV1SessionsSessionIdPrPrNumberFilesOptions) => {
const {baseUrl = "http://127.0.0.1:3001", fetch: fetchFn = fetch} = options ?? {}

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

if (args.sourceUrl != null) query.append("sourceUrl", String(args.sourceUrl))

const url = `${baseUrl.replace(/\/+$/, '')}/api/v1/sessions/${encodeURIComponent(String(args.sessionId))}/pr/${encodeURIComponent(String(args.prNumber))}/files${query.size > 0 ? `?${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(listPRFilesResponse, await res.json())
};