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import { deduplicateMemories } from "../shared"
import type { Logger } from "./logger"
import {
type LanguageModelCallOptions,
convertProfileToMarkdown,
type ProfileStructure,
} from "./util"
/**
* Data provided to the prompt template function for customizing memory injection.
*/
export interface MemoryPromptData {
/**
* Pre-formatted markdown combining static and dynamic profile memories.
* Contains core user facts (name, preferences, goals) and recent context (projects, interests).
*/
userMemories: string
/**
* Pre-formatted search results text for the current query.
* Contains memories retrieved based on semantic similarity to the conversation.
* Empty string if mode is "profile" only.
*/
generalSearchMemories: string
}
/**
* Function type for customizing the memory prompt injection.
* Return the full string to be injected into the system prompt.
*
* @example
* ```typescript
* const promptTemplate: PromptTemplate = (data) => `
* <user_memories>
* Here is some information about your past conversations:
* ${data.userMemories}
* ${data.generalSearchMemories}
* </user_memories>
* `.trim()
* ```
*/
export type PromptTemplate = (data: MemoryPromptData) => string
/**
* Default prompt template that replicates the original behavior.
*/
export const defaultPromptTemplate: PromptTemplate = (data) =>
`User Supermemories: \n${data.userMemories}\n${data.generalSearchMemories}`.trim()
export const normalizeBaseUrl = (url?: string): string => {
const defaultUrl = "https://api.supermemory.ai"
if (!url) return defaultUrl
return url.endsWith("/") ? url.slice(0, -1) : url
}
const supermemoryProfileSearch = async (
containerTag: string,
queryText: string,
baseUrl: string,
apiKey: string,
): Promise<ProfileStructure> => {
const payload = queryText
? JSON.stringify({
q: queryText,
containerTag: containerTag,
})
: JSON.stringify({
containerTag: containerTag,
})
try {
const response = await fetch(`${baseUrl}/v4/profile`, {
method: "POST",
headers: {
"Content-Type": "application/json",
Authorization: `Bearer ${apiKey}`,
},
body: payload,
})
if (!response.ok) {
const errorText = await response.text().catch(() => "Unknown error")
throw new Error(
`Supermemory profile search failed: ${response.status} ${response.statusText}. ${errorText}`,
)
}
return await response.json()
} catch (error) {
if (error instanceof Error) {
throw error
}
throw new Error(`Supermemory API request failed: ${error}`)
}
}
export const addSystemPrompt = async (
params: LanguageModelCallOptions,
containerTag: string,
logger: Logger,
mode: "profile" | "query" | "full",
baseUrl: string,
apiKey: string,
promptTemplate: PromptTemplate = defaultPromptTemplate,
): Promise<LanguageModelCallOptions> => {
const systemPromptExists = params.prompt.some(
(prompt) => prompt.role === "system",
)
const queryText =
mode !== "profile"
? params.prompt
.slice()
.reverse()
.find((prompt: { role: string }) => prompt.role === "user")
?.content?.filter(
(content: { type: string }) => content.type === "text",
)
?.map((content: { type: string; text: string }) =>
content.type === "text" ? content.text : "",
)
?.join(" ") || ""
: ""
const memoriesResponse = await supermemoryProfileSearch(
containerTag,
queryText,
baseUrl,
apiKey,
)
const memoryCountStatic = memoriesResponse.profile.static?.length || 0
const memoryCountDynamic = memoriesResponse.profile.dynamic?.length || 0
logger.info("Memory search completed", {
containerTag,
memoryCountStatic,
memoryCountDynamic,
queryText:
queryText.substring(0, 100) + (queryText.length > 100 ? "..." : ""),
mode,
})
const deduplicated = deduplicateMemories({
static: memoriesResponse.profile.static,
dynamic: memoriesResponse.profile.dynamic,
searchResults: memoriesResponse.searchResults?.results,
})
logger.debug("Memory deduplication completed", {
static: {
original: memoryCountStatic,
deduplicated: deduplicated.static.length,
},
dynamic: {
original: memoryCountDynamic,
deduplicated: deduplicated.dynamic.length,
},
searchResults: {
original: memoriesResponse.searchResults?.results?.length,
deduplicated: deduplicated.searchResults?.length,
},
})
const userMemories =
mode !== "query"
? convertProfileToMarkdown({
profile: {
static: deduplicated.static,
dynamic: deduplicated.dynamic,
},
searchResults: { results: [] },
})
: ""
const generalSearchMemories =
mode !== "profile"
? `Search results for user's recent message: \n${deduplicated.searchResults
.map((memory) => `- ${memory}`)
.join("\n")}`
: ""
const promptData: MemoryPromptData = {
userMemories,
generalSearchMemories,
}
const memories = promptTemplate(promptData)
if (memories) {
logger.debug("Memory content preview", {
content: memories,
fullLength: memories.length,
})
}
if (systemPromptExists) {
logger.debug("Added memories to existing system prompt")
// biome-ignore lint/suspicious/noExplicitAny: Union type compatibility between V2 and V3 prompt types
const newPrompt = params.prompt.map((prompt: any) =>
prompt.role === "system"
? { ...prompt, content: `${prompt.content} \n ${memories}` }
: prompt,
)
return { ...params, prompt: newPrompt } as LanguageModelCallOptions
}
logger.debug(
"System prompt does not exist, created system prompt with memories",
)
const newPrompt = [
{ role: "system" as const, content: memories },
...params.prompt,
// biome-ignore lint/suspicious/noExplicitAny: Union type compatibility between V2 and V3 prompt types
] as any
return { ...params, prompt: newPrompt } as LanguageModelCallOptions
}
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