import {z} from 'zod'

export type GetApiApiV1ConversationsConversationIdMessagesArgs = {conversation_id: string};

export type GetApiApiV1ConversationsConversationIdMessagesOptions = {baseUrl: string, fetch?: typeof fetch | undefined};

export const conversation = z.object({id: z.string(), project_id: z.string(), title: z.string().nullable(), visibility: z.enum(["private", "project"]), created_at: z.string(), updated_at: z.string(), created_by: z.string().nullable().optional(), created_by_name: z.string().nullable().optional()});

export const messageRole = z.enum(["user", "assistant", "tool"]);

export const textBlock = z.object({type: z.literal("text").optional(), text: z.string()});

export const toolUseBlock = z.object({type: z.literal("tool_use").optional(), id: z.string(), name: z.string(), input: z.record(z.string(), z.unknown()), provider_signature: z.string().nullable().optional()});

export const imageRefPart = z.object({type: z.literal("image_ref").optional(), page_id: z.string(), region: z.array(z.unknown()).nullable().optional(), purpose: z.enum(["page", "tile", "region"]).optional()});

export const toolResultBlock = z.object({type: z.literal("tool_result").optional(), tool_use_id: z.string(), content: z.union([z.string(), z.array(z.discriminatedUnion("type", [textBlock, imageRefPart]))]), is_error: z.boolean().optional()});

export const annotationContextItem = z.object({kind: z.literal("annotation").optional(), measurement_id: z.string()});

export const regionContextItem = z.object({kind: z.literal("region").optional(), page_id: z.string(), x: z.number(), y: z.number(), width: z.number(), height: z.number()});

export const uiState = z.object({active_takeoff_tool: z.string().max(64).nullable().optional(), active_markup_tool: z.string().max(64).nullable().optional(), selected_measurement_ids: z.array(z.string()).optional(), selected_annotation_ids: z.array(z.string()).optional(), total_selected: z.number().int().gte(0).nullable().optional()});

export const messageContext = z.object({active_page_id: z.string().nullable().optional(), items: z.array(z.discriminatedUnion("kind", [annotationContextItem, regionContextItem])).optional(), ui_state: uiState.nullable().optional()});

export const contextBlock = z.object({type: z.literal("context").optional(), text: z.string(), context: messageContext});

export const unknownBlock = z.object({type: z.string()}).and(z.record(z.string(), z.unknown()));

export const conversationMessage = z.object({id: z.string(), conversation_id: z.string(), sequence: z.number().int(), role: messageRole, content: z.array(z.union([z.union([textBlock, toolUseBlock, toolResultBlock, contextBlock]), unknownBlock])), provider: z.string().nullable().optional(), model: z.string().nullable().optional(), prompt_version: z.string().nullable().optional(), input_tokens: z.number().int().nullable().optional(), output_tokens: z.number().int().nullable().optional(), cache_read_tokens: z.number().int().nullable().optional(), cache_write_tokens: z.number().int().nullable().optional(), created_at: z.string()});

export const conversationDetail = z.object({conversation: conversation, messages: z.array(conversationMessage)});

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
};

/**
 * List Conversation Messages
 * 
 * GET /api/v1/conversations/{conversation_id}/messages
 */
export const getApiApiV1ConversationsConversationIdMessages = async (args: GetApiApiV1ConversationsConversationIdMessagesArgs, options: GetApiApiV1ConversationsConversationIdMessagesOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/api/v1/conversations/${encodeURIComponent(String(args.conversation_id))}/messages${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(conversationDetail, await res.json())
};