import {z} from 'zod'

export type GetApiPullRequestsCliSuggestionsArgs = {prUrl: string, repositoryId: string, prNumber: string, format: string, severity: string, category: string, 'x-team-key': string, authorization: string};

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

export const pullRequestSuggestionCommentDto = z.object({id: z.object({}), pullRequestReviewId: z.object({})});

export const pullRequestSuggestionDto = z.object({id: z.string().optional(), suggestionContent: z.string().optional(), oneSentenceSummary: z.string().optional(), label: z.string().optional(), severity: z.string().optional(), deliveryStatus: z.string().optional(), relevantLinesStart: z.number().optional(), relevantLinesEnd: z.number().optional(), existingCode: z.string().optional(), improvedCode: z.string().optional(), filePath: z.string().optional(), createdAt: z.string().optional(), updatedAt: z.string().optional(), comment: pullRequestSuggestionCommentDto.optional()});

export const pullRequestSuggestionsGroupDto = z.object({files: z.array(pullRequestSuggestionDto), prLevel: z.array(pullRequestSuggestionDto)});

export const pullRequestSuggestionsPayloadDto = z.object({prNumber: z.number(), repositoryId: z.string(), repositoryFullName: z.string().optional(), suggestions: pullRequestSuggestionsGroupDto});

export const pullRequestSuggestionsResponseDto = z.object({statusCode: z.number(), type: z.string(), data: pullRequestSuggestionsPayloadDto});

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 PR suggestions (CLI) via GET
 * 
 * GET /pull-requests/cli/suggestions
 */
export const getApiPullRequestsCliSuggestions = async (args: GetApiPullRequestsCliSuggestionsArgs, options?: GetApiPullRequestsCliSuggestionsOptions) => {
const {baseUrl = "http://localhost:3001", fetch: fetchFn = fetch} = options ?? {}

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

if (args.prUrl != null) query.append("prUrl", String(args.prUrl))
if (args.repositoryId != null) query.append("repositoryId", String(args.repositoryId))
if (args.prNumber != null) query.append("prNumber", String(args.prNumber))
if (args.format != null) query.append("format", String(args.format))
if (args.severity != null) query.append("severity", String(args.severity))
if (args.category != null) query.append("category", String(args.category))
if (args['x-team-key'] != null) headers.set("x-team-key", String(args['x-team-key']))
if (args.authorization != null) headers.set("authorization", String(args.authorization))

const url = `${baseUrl.replace(/\/+$/, '')}/pull-requests/cli/suggestions${query.size > 0 ? `?${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(pullRequestSuggestionsResponseDto, await res.json())
};