import {z} from 'zod'

export type GetApiSessionsSessionIdBrowserRegionArgs = {session_id: string, chrom: string, start: number, end: number};

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

export const browserSnvOut = z.object({chrom: z.string(), pos: z.number().int(), gene: z.string().nullable().optional(), cls: z.string().nullable().optional(), hgvs: z.string().nullable().optional(), ref: z.string().nullable().optional(), alt: z.string().nullable().optional(), bayesdelNoaf: z.number().nullable().optional(), bayesdelNoafPred: z.string().nullable().optional(), spliceaiMax: z.number().nullable().optional(), spliceaiPred: z.string().nullable().optional(), phylop: z.number().nullable().optional(), gerp: z.number().nullable().optional(), alphamissense: z.number().nullable().optional(), sift: z.number().nullable().optional(), metasvm: z.number().nullable().optional(), dann: z.number().nullable().optional(), mpc: z.number().nullable().optional(), af: z.number().nullable().optional(), afGrpmax: z.number().nullable().optional(), popmax: z.string().nullable().optional(), hom: z.number().int().nullable().optional(), loeuf: z.number().nullable().optional(), misZ: z.number().nullable().optional(), pli: z.number().nullable().optional(), clinvarSig: z.string().nullable().optional(), reviewStars: z.number().int().nullable().optional(), clinvarId: z.string().nullable().optional(), criteria: z.string().nullable().optional(), confidence: z.number().nullable().optional(), consequence: z.string().nullable().optional(), impact: z.string().nullable().optional(), hgvsCdna: z.string().nullable().optional(), transcriptId: z.string().nullable().optional(), transcriptRepresentations: z.record(z.string(), z.unknown()).nullable().optional(), exonNumber: z.string().nullable().optional(), domains: z.string().nullable().optional(), pm1Source: z.string().nullable().optional(), vcepApplied: z.boolean().nullable().optional(), vcepPanel: z.string().nullable().optional(), deNovo: z.boolean().nullable().optional(), hiScore: z.number().int().nullable().optional(), tsScore: z.number().int().nullable().optional()});

export const browserSvOut = z.object({chrom: z.string(), start: z.number().int(), end: z.number().int(), svType: z.string().nullable().optional(), cls: z.string().nullable().optional()});

export const browserGeneOut = z.object({chrom: z.string(), symbol: z.string(), start: z.number().int(), end: z.number().int(), strand: z.string().nullable().optional(), exons: z.array(z.number().int()).optional()});

export const browserRegionOut = z.object({chrom: z.string(), start: z.number().int(), end: z.number().int(), axis: z.string(), iscaId: z.string().nullable().optional(), score: z.number().int().nullable().optional()});

export const browserExonPextOut = z.object({chrom: z.string(), gene: z.string(), exonStart: z.number().int(), exonEnd: z.number().int(), maxTissuePext: z.number(), meanPext: z.number(), brainCortexPext: z.number().nullable().optional(), wholeBloodPext: z.number().nullable().optional(), tier: z.string()});

export const browserRegionResponse = z.object({snvs: z.array(browserSnvOut), svs: z.array(browserSvOut), genes: z.array(browserGeneOut), regions: z.array(browserRegionOut), pext: z.array(browserExonPextOut).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
};

/**
 * Region read for the genome browser
 * 
 * GET /sessions/{session_id}/browser/region
 */
export const getApiSessionsSessionIdBrowserRegion = async (args: GetApiSessionsSessionIdBrowserRegionArgs, options: GetApiSessionsSessionIdBrowserRegionOptions) => {
const {baseUrl, fetch: fetchFn = fetch, HTTPBearer} = options ?? {}

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

if (args.chrom != null) query.append("chrom", String(args.chrom))
if (args.start != null) query.append("start", String(args.start))
if (args.end != null) query.append("end", String(args.end))
if (HTTPBearer !== undefined) headers.set('authorization', `Bearer ${HTTPBearer}`)

const url = `${baseUrl.replace(/\/+$/, '')}/sessions/${encodeURIComponent(String(args.session_id))}/browser/region${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(browserRegionResponse, await res.json())
};