import {z} from 'zod'

export type GetApiIssuesIdResultsArgs = {'Antimetal-Version'?: string | undefined, version?: number | undefined, id: string};

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

export const issueResultsDto = z.object({sessionUuid: z.string().nullable(), rootCause: z.object({id: z.string(), incidentOverview: z.string(), rootCauseSummary: z.string(), relevantEvidence: z.array(z.object({title: z.string(), status: z.enum(["relevant", "irrelevant", "inconclusive"]), description: z.string(), confidence: z.enum(["unknown", "unclear", "probable", "likely", "confirmed"]), artifacts: z.array(z.object({documentId: z.string(), title: z.string(), description: z.string(), dataType: z.string()}))})), irrelevantEvidence: z.array(z.object({title: z.string(), status: z.enum(["relevant", "irrelevant", "inconclusive"]), description: z.string(), confidence: z.enum(["unknown", "unclear", "probable", "likely", "confirmed"]), artifacts: z.array(z.object({documentId: z.string(), title: z.string(), description: z.string(), dataType: z.string()}))}))}).nullable(), causalTree: z.object({nodes: z.array(z.object({id: z.string(), type: z.enum(["validated", "needs-context", "ruled-out"]), title: z.string(), description: z.string(), expandedContent: z.string().optional()})), edges: z.array(z.object({id: z.string(), source: z.string(), target: z.string()}))}), causalTreeV2: z.object({nodes: z.array(z.object({id: z.string(), title: z.string(), description: z.string(), confidence: z.enum(["unknown", "unclear", "probable", "likely", "confirmed"]), nodeType: z.enum(["outcome", "cause", "confounder", "mediator"]), evidence: z.array(z.object({documentId: z.string(), title: z.string().min(1), description: z.string().min(1), dataType: z.string()}))})), edges: z.array(z.object({from: z.string(), to: z.string(), confidence: z.number().gte(0).lte(1)}))}), remediation: z.object({actions: z.array(z.object({id: z.string(), uuid: z.string(), title: z.string(), description: z.string().optional(), category: z.enum(["immediate", "root_cause", "preventative"]).optional(), steps: z.array(z.union([z.object({id: z.string(), title: z.string(), helpMarkdown: z.string().optional(), required: z.boolean(), label: z.string().optional(), type: z.literal("info"), content: z.string()}), z.object({id: z.string(), title: z.string(), helpMarkdown: z.string().optional(), required: z.boolean(), label: z.string().optional(), type: z.literal("code"), files: z.array(z.object({filename: z.string(), language: z.string().optional(), content: z.string()})), activeFilename: z.string().optional()}), z.object({id: z.string(), title: z.string(), helpMarkdown: z.string().optional(), required: z.boolean(), label: z.string().optional(), type: z.literal("cli"), command: z.string()})])), markdownPrompt: z.string().optional()}))}), timeline: z.array(z.object({id: z.string(), type: z.enum(["outcome", "cause", "confounder", "mediator"]).nullable(), timestamp: z.string().nullable(), title: z.string(), description: z.string(), evidence: z.array(z.object({artifactId: z.string().nullable(), timestamp: z.string().nullable(), title: z.string(), description: z.string()}))}))});

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
};

/**
 * Fetch investigation results by ID (UUID)
 * 
 * GET /issues/{id}/results
 */
export const getApiIssuesIdResults = async (args: GetApiIssuesIdResultsArgs, options?: GetApiIssuesIdResultsOptions) => {
const {baseUrl = "https://bff.antimetal.com/api/v2", fetch: fetchFn = fetch, bearer} = options ?? {}

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

if (args['Antimetal-Version'] != null) headers.set("Antimetal-Version", String(args['Antimetal-Version']))
if (args.version != null) query.append("version", String(args.version))
if (bearer !== undefined) headers.set('authorization', `Bearer ${bearer}`)

const url = `${baseUrl.replace(/\/+$/, '')}/issues/${encodeURIComponent(String(args.id))}/results${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(issueResultsDto, await res.json())
};