import {z} from 'zod'

export type GetApiChatGetChatSessionSessionIdArgs = {session_id: number};

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

export const documentSource = z.enum(["ingestion_api", "slack", "web", "google_drive", "gmail", "requesttracker", "github", "gitlab", "guru", "bookstack", "confluence", "discourse", "slab", "salesforce", "jira", "productboard", "file", "notion", "zulip", "linear", "hubspot", "document360", "gong", "google_sites", "zendesk", "loopio", "sharepoint", "teams", "freshdesk"]);

export const savedSearchDoc = z.object({document_id: z.string(), chunk_ind: z.number().int(), semantic_identifier: z.string(), link: z.string().optional(), blurb: z.string(), source_type: documentSource, boost: z.number().int(), hidden: z.boolean(), metadata: z.record(z.string(), z.union([z.string(), z.array(z.string())])), score: z.number().optional(), match_highlights: z.array(z.string()), updated_at: z.string().optional(), primary_owners: z.array(z.string()).optional(), secondary_owners: z.array(z.string()).optional(), db_doc_id: z.number().int()});

export const retrievalDocs = z.object({top_documents: z.array(savedSearchDoc)});

export const messageType = z.enum(["system", "user", "assistant"]);

export const chatMessageDetail = z.object({message_id: z.number().int(), parent_message: z.number().int().optional(), latest_child_message: z.number().int().optional(), message: z.string(), rephrased_query: z.string().optional(), context_docs: retrievalDocs.optional(), message_type: messageType, time_sent: z.string(), citations: z.record(z.string(), z.number().int()).optional()});

export const chatSessionDetailResponse = z.object({chat_session_id: z.number().int(), description: z.string(), persona_id: z.number().int(), messages: z.array(chatMessageDetail)});

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 Chat Session
 * 
 * GET /chat/get-chat-session/{session_id}
 */
export const getApiChatGetChatSessionSessionId = async (args: GetApiChatGetChatSessionSessionIdArgs, options: GetApiChatGetChatSessionSessionIdOptions) => {
const {baseUrl, fetch: fetchFn = fetch, APIKeyCookie} = options ?? {}

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

if (APIKeyCookie !== undefined) cookies.push("fastapiusersauth=" + encodeURIComponent(APIKeyCookie))

const url = `${baseUrl.replace(/\/+$/, '')}/chat/get-chat-session/${encodeURIComponent(String(args.session_id))}${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(chatSessionDetailResponse, await res.json())
};