import {z} from 'zod'

export type GetApiTopicsV1CurrentArgs = {classes?: (Array<'Treasury Management' | 'Treasury Expense' | 'Project Team Funding' | 'Incentives Program' | 'Discontinued Product' | 'Project Strategy' | 'Partnership' | 'Token Swap or Migration' | 'Network Upgrade' | 'Governance Update' | 'Project Announcements' | 'Network Deployment' | 'Airdrop' | 'Feature Release' | 'Network Launch' | 'Token Listing' | 'Security and Hacks' | 'Protocol Exploit' | 'Vulnerability Disclosure' | 'Centralized Exchange Loss of Funds' | 'Funding' | 'Legal and Regulatory' | 'Network Congestion' | 'Blockchain Halt' | 'Node Outage' | 'Bug Disclosure' | 'Chain Split' | 'Community Update' | 'Macro Commentary' | 'Price Analysis' | 'Irrelevant Content'>) | undefined, sort?: ('trending' | 'new' | 'top') | undefined, assetIDs?: string | undefined, page?: number | undefined, limit?: number | undefined};

export type GetApiTopicsV1CurrentOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const topicDocument = z.object({url: z.string().optional(), type: z.string().optional()});

export const assetEntity = z.object({id: z.string().optional(), name: z.string().optional(), symbol: z.string().optional(), slug: z.string().optional()});

export const topic = z.object({title: z.string().optional(), summary: z.string().optional(), content: z.string().optional(), rank: z.number().optional(), classes: z.array(z.string()).optional(), topDocuments: z.array(topicDocument).optional(), documentCount: z.number().optional(), avgDocumentTimestamp: z.string().optional(), assets: z.array(assetEntity).optional()});

export const topicsMetadata = z.object({snapshotTime: z.string().optional(), includedClasses: z.array(z.string()).optional()});

export const topicsResponse = z.object({error: z.string().nullable().optional(), data: z.array(topic).optional(), metadata: topicsMetadata.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 Current Topics
 * 
 * GET /topics/v1/current
 */
export const getApiTopicsV1Current = async (args: GetApiTopicsV1CurrentArgs, options?: GetApiTopicsV1CurrentOptions) => {
const {baseUrl = "https://api.messari.io", fetch: fetchFn = fetch} = options ?? {}

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

if (args.classes != null) query.append("classes", args.classes.join(','))
if (args.sort != null) query.append("sort", String(args.sort))
if (args.assetIDs != null) query.append("assetIDs", String(args.assetIDs))
if (args.page != null) query.append("page", String(args.page))
if (args.limit != null) query.append("limit", String(args.limit))

const url = `${baseUrl.replace(/\/+$/, '')}/topics/v1/current${query.size > 0 ? `?${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(topicsResponse, await res.json())
};