import {z} from 'zod'

export type GetApiExamsResultsSchoolSummaryArgs = {includeOtherCentres: boolean, year?: (number | null) | undefined, bypassLockdown: boolean, page: number, pageSize: number, includes?: (Array<string> | null) | undefined, sort?: (string | null) | undefined, filter?: (string | null) | undefined};

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

export const examGradeCountView = z.object({level: z.string().nullable().optional(), grade: z.string().nullable().optional(), count: z.number().int().optional(), percent: z.number().optional(), cumulativePercent: z.number().optional(), order: z.number().int().optional()});

export const examLevelSummaryView = z.object({level: z.string().nullable().optional(), entries: z.number().int().optional(), candidates: z.number().int().optional(), unclassified: z.number().int().optional(), topGradeCount: z.number().int().optional(), topGradePercent: z.number().optional(), highGradeCount: z.number().int().optional(), highGradePercent: z.number().optional(), passCount: z.number().int().optional(), passPercent: z.number().optional(), averagePoints: z.number().optional(), topGradeLabel: z.string().nullable().optional(), highGradeLabel: z.string().nullable().optional(), passLabel: z.string().nullable().optional()});

export const examSubjectSummaryView = z.object({level: z.string().nullable().optional(), subject: z.string().nullable().optional(), entries: z.number().int().optional(), topGradeCount: z.number().int().optional(), topGradePercent: z.number().optional(), passCount: z.number().int().optional(), passPercent: z.number().optional(), averagePoints: z.number().optional()});

export const examCandidateBandView = z.object({topGrades: z.number().int().optional(), candidates: z.number().int().optional()});

export const examCandidateSummaryView = z.object({level: z.string().nullable().optional(), candidates: z.number().int().optional(), averageEntries: z.number().optional(), averagePointsPerCandidate: z.number().optional(), averagePointsPerEntry: z.number().optional(), cleanSweepCandidates: z.number().int().optional(), cleanSweepPercent: z.number().optional(), noTopGradeCandidates: z.number().int().optional(), topGradeSpread: z.array(examCandidateBandView).optional()});

export const examHouseSummaryView = z.object({level: z.string().nullable().optional(), house: z.string().nullable().optional(), entries: z.number().int().optional(), candidates: z.number().int().optional(), topGradeCount: z.number().int().optional(), topGradePercent: z.number().optional(), passCount: z.number().int().optional(), passPercent: z.number().optional(), averagePoints: z.number().optional()});

export const examYearTrendView = z.object({year: z.number().int().optional(), level: z.string().nullable().optional(), entries: z.number().int().optional(), topGradePercent: z.number().optional(), passPercent: z.number().optional(), averagePoints: z.number().optional()});

export const examSetting = z.object({id: z.number().int().optional(), examType: z.string().nullable().optional(), visibleToStudents: z.string().nullable().optional(), visibleToStaff: z.string().nullable().optional(), visibleToParents: z.string().nullable().optional(), dateToDisplay: z.string().optional(), saving: z.boolean().optional(), currentlyVisible: z.boolean().optional()});

export const meta = z.object({page: z.number().int().optional(), pageSize: z.number().int().optional(), total: z.number().int().optional()});

export const getSchoolExamResultsSummaryResponse = z.object({year: z.number().int().nullable().optional(), availableYears: z.array(z.number().int()).optional(), gradeDistribution: z.array(examGradeCountView).optional(), levelSummaries: z.array(examLevelSummaryView).optional(), subjectSummaries: z.array(examSubjectSummaryView).optional(), candidateSummaries: z.array(examCandidateSummaryView).optional(), houseSummaries: z.array(examHouseSummaryView).optional(), yearTrend: z.array(examYearTrendView).optional(), examSettings: z.array(examSetting).optional(), lockdownBypassed: z.boolean().optional(), hiddenLevels: z.array(z.string()).optional(), currentDateTime: z.string().nullable().optional(), currentDateTimeUtc: z.string().nullable().optional(), meta: meta.nullable().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
};

/**
 * Get whole-School exam analytics
 * 
 * GET /Exams/Results/School/Summary
 */
export const getApiExamsResultsSchoolSummary = async (args: GetApiExamsResultsSchoolSummaryArgs, options?: GetApiExamsResultsSchoolSummaryOptions) => {
const {baseUrl = "https://api.tonbridge.school", fetch: fetchFn = fetch, JWTBearerAuth} = options ?? {}

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

if (args.includeOtherCentres != null) query.append("includeOtherCentres", String(args.includeOtherCentres))
if (args.year != null) query.append("year", String(args.year))
if (args.bypassLockdown != null) query.append("bypassLockdown", String(args.bypassLockdown))
if (args.page != null) query.append("page", String(args.page))
if (args.pageSize != null) query.append("pageSize", String(args.pageSize))
for (const item of args.includes ?? []) query.append("includes", String(item))
if (args.sort != null) query.append("sort", String(args.sort))
if (args.filter != null) query.append("filter", String(args.filter))
if (JWTBearerAuth !== undefined) headers.set('authorization', `Bearer ${JWTBearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/Exams/Results/School/Summary${query.size > 0 ? `?${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(getSchoolExamResultsSummaryResponse, await res.json())
};