opencode/packages/core/src/session/context-entry.ts

106 lines
4 KiB
TypeScript

export * as SessionContextEntry from "./context-entry"
import { and, asc, eq } from "drizzle-orm"
import { Context, Effect, Layer, Schema } from "effect"
import { SessionContextEntry } from "@opencode-ai/schema/session-context-entry"
import { Database } from "../database/database"
import { makeLocationNode } from "../effect/app-node"
import { SystemContext } from "../system-context/index"
import { SessionSchema } from "./schema"
import { SessionContextEntryTable } from "./sql"
export const Key = SessionContextEntry.Key
export type Key = typeof Key.Type
export const Info = SessionContextEntry.Info
export type Info = typeof Info.Type
export interface Interface {
readonly list: (sessionID: SessionSchema.ID) => Effect.Effect<ReadonlyArray<Info>>
readonly put: (input: {
readonly sessionID: SessionSchema.ID
readonly key: Key
readonly value: Schema.Json
}) => Effect.Effect<void>
readonly remove: (input: { readonly sessionID: SessionSchema.ID; readonly key: Key }) => Effect.Effect<void>
/** Produces one SystemContext source per stored entry, keyed `api/<key>`. */
readonly load: (sessionID: SessionSchema.ID) => Effect.Effect<SystemContext.SystemContext>
}
export class Service extends Context.Service<Service, Interface>()("@opencode/v2/SessionContextEntry") {}
const renderValue = (value: Schema.Json) => (typeof value === "string" ? value : JSON.stringify(value, null, 2))
const renderBlock = (key: Key, value: Schema.Json) =>
[`<context key="${key}">`, renderValue(value), "</context>"].join("\n")
// Rendering stays mechanism-neutral: the model sees session context, not how
// it was attached. Only chronological updates and removals carry narration.
const source = (entry: Info) =>
SystemContext.make({
key: SystemContext.Key.make(`api/${entry.key}`),
codec: Schema.toCodecJson(Schema.Json),
load: Effect.succeed(entry.value),
baseline: (value) => renderBlock(entry.key, value),
update: (_previous, value) =>
[
`The context under "${entry.key}" changed and supersedes the previous value:`,
renderBlock(entry.key, value),
].join("\n"),
removed: () => `The context under "${entry.key}" no longer applies. Disregard it.`,
})
const layer = Layer.effect(
Service,
Effect.gen(function* () {
const { db } = yield* Database.Service
const list = Effect.fn("SessionContextEntry.list")(function* (sessionID: SessionSchema.ID) {
const rows = yield* db
.select()
.from(SessionContextEntryTable)
.where(eq(SessionContextEntryTable.session_id, sessionID))
.orderBy(asc(SessionContextEntryTable.key))
.all()
.pipe(Effect.orDie)
return rows.map((row) => ({ key: row.key, value: row.value }))
})
const put = Effect.fn("SessionContextEntry.put")(function* (input: {
readonly sessionID: SessionSchema.ID
readonly key: Key
readonly value: Schema.Json
}) {
yield* db
.insert(SessionContextEntryTable)
.values({ session_id: input.sessionID, key: input.key, value: input.value })
.onConflictDoUpdate({
target: [SessionContextEntryTable.session_id, SessionContextEntryTable.key],
set: { value: input.value, time_updated: Date.now() },
})
.run()
.pipe(Effect.orDie)
})
const remove = Effect.fn("SessionContextEntry.remove")(function* (input: {
readonly sessionID: SessionSchema.ID
readonly key: Key
}) {
yield* db
.delete(SessionContextEntryTable)
.where(
and(eq(SessionContextEntryTable.session_id, input.sessionID), eq(SessionContextEntryTable.key, input.key)),
)
.run()
.pipe(Effect.orDie)
})
const load = Effect.fn("SessionContextEntry.load")(function* (sessionID: SessionSchema.ID) {
const entries = yield* list(sessionID)
return SystemContext.combine(entries.map(source))
})
return Service.of({ list, put, remove, load })
}),
)
export const node = makeLocationNode({ service: Service, layer, deps: [Database.node] })