auth,feeds,ai,ui,deploy: build Stellar
Use Effect services for requests, AI tasks, and the RSS worker. Add admin accounts, feed sharing, and stored reading profiles. Add Biome, Effect tools, and Podman deployment with Caddy.
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import { and, desc, eq } from "drizzle-orm"
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import { Effect, Schema } from "effect"
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import type { AppData, Command, UserView } from "../shared/contracts"
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import { Ai } from "./ai"
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import { Auth } from "./auth"
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import { AppConfig } from "./config"
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import { Database } from "./database"
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import * as domain from "./domain"
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import { AppError } from "./errors"
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import { threads } from "./schema"
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const bounded = (min: number, max: number) =>
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Schema.String.check(Schema.isMinLength(min), Schema.isMaxLength(max))
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const id = bounded(1, 100)
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const url = bounded(1, 2048)
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const optionalTitle = Schema.optionalKey(bounded(0, 300))
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export const CommandSchema = Schema.Union([
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Schema.Struct({ action: Schema.Literal("bootstrap") }),
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Schema.Struct({
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action: Schema.Literal("listFeeds"),
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view: Schema.Literals(["all", "public", "saved", "ai"]),
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query: Schema.optionalKey(bounded(0, 200)),
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}),
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Schema.Struct({ action: Schema.Literal("getFeed"), id }),
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Schema.Struct({
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action: Schema.Literal("submitFeed"),
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url: Schema.optionalKey(url),
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content: Schema.optionalKey(bounded(0, 60_000)),
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title: optionalTitle,
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}),
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Schema.Struct({ action: Schema.Literal("forwardFeed"), id, toUserId: id }),
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Schema.Struct({
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action: Schema.Literal("comment"),
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id,
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content: bounded(1, 5000),
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}),
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Schema.Struct({
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action: Schema.Literal("feedback"),
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id,
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interested: Schema.Boolean,
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}),
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Schema.Struct({
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action: Schema.Literal("saveFeed"),
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id,
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saved: Schema.Boolean,
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}),
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Schema.Struct({ action: Schema.Literal("summarize"), id, modelId: id }),
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Schema.Struct({
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action: Schema.Literal("translate"),
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id,
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modelId: id,
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language: bounded(1, 80),
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}),
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Schema.Struct({
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action: Schema.Literal("subscribe"),
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url,
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title: optionalTitle,
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}),
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Schema.Struct({
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action: Schema.Literal("updateSubscription"),
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id,
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enabled: Schema.Boolean,
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}),
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Schema.Struct({ action: Schema.Literal("unsubscribe"), id }),
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Schema.Struct({
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action: Schema.Literal("updatePreferences"),
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preferences: bounded(0, 8000),
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}),
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Schema.Struct({ action: Schema.Literal("listUsers") }),
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Schema.Struct({
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action: Schema.Literal("createUser"),
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email: bounded(3, 254).check(
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Schema.isPattern(/^[^\s@]+@[^\s@]+\.[^\s@]+$/),
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),
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username: bounded(3, 32).check(Schema.isPattern(/^[a-z0-9_]+$/)),
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name: bounded(1, 100),
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password: bounded(12, 128),
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role: Schema.Literals(["user", "admin"]),
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}),
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Schema.Struct({ action: Schema.Literal("createThread") }),
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Schema.Struct({ action: Schema.Literal("getThread"), id }),
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Schema.Struct({ action: Schema.Literal("deleteThread"), id }),
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])
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export const executeCommand = Effect.fn("app.command")(function* (
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actor: UserView,
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command: Command,
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headers: Headers,
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) {
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const userId = actor.id
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switch (command.action) {
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case "bootstrap": {
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const config = yield* AppConfig
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const { db, query } = yield* Database
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const results = yield* Effect.all(
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{
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feeds: domain.listFeeds(userId),
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subscriptions: domain.listSubscriptions(userId),
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profile: domain.getProfile(userId),
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users: domain.listDirectory(),
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threads: query(() =>
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db
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.select({
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id: threads.id,
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title: threads.title,
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updatedAt: threads.updatedAt,
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})
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.from(threads)
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.where(eq(threads.userId, userId))
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.orderBy(desc(threads.updatedAt))
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.limit(100),
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),
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},
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{ concurrency: 4 },
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)
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return {
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...results,
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user: actor,
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models: config.models.map(({ id, name, provider }) => ({
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id,
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name,
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provider,
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})),
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threads: results.threads.map((t) => ({
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...t,
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updatedAt: t.updatedAt.toISOString(),
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})),
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} satisfies AppData
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}
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case "listFeeds":
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return yield* domain.listFeeds(userId, command.view, command.query)
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case "getFeed":
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return yield* domain.getFeed(userId, command.id)
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case "submitFeed":
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return yield* domain.submitFeed(userId, command)
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case "forwardFeed":
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return yield* domain.forwardFeed(userId, command.id, command.toUserId)
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case "comment":
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return yield* domain.comment(userId, command.id, command.content)
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case "feedback": {
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const result = yield* domain.feedback(
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userId,
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command.id,
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command.interested,
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)
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// Feedback is durable even when the provider is unavailable. RSS retries refinement.
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const ai = yield* Ai
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yield* ai.refineProfile(userId).pipe(
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Effect.catch((error) =>
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Effect.logWarning("Profile refinement will retry.", {
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userId,
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error: error.message,
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}),
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),
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)
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return result
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}
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case "saveFeed":
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return yield* domain.saveFeed(userId, command.id, command.saved)
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case "summarize":
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return yield* (yield* Ai).summarize(userId, command.id, command.modelId)
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case "translate":
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return yield* (yield* Ai).translate(
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userId,
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command.id,
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command.modelId,
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command.language,
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)
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case "subscribe":
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return yield* domain.subscribe(userId, command.url, command.title)
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case "updateSubscription":
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return yield* domain.updateSubscription(
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userId,
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command.id,
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command.enabled,
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)
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case "unsubscribe":
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return yield* domain.unsubscribe(userId, command.id)
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case "updatePreferences":
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return yield* domain.updatePreferences(userId, command.preferences)
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case "listUsers":
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return yield* domain.listUsers(actor)
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case "createUser": {
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if (actor.role !== "admin")
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return yield* new AppError({
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message: "Administrator access is required.",
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status: 403,
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})
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const result = yield* (yield* Auth).createUser({
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headers,
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body: {
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email: command.email,
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password: command.password,
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name: command.name,
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role: command.role,
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data: {
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username: command.username,
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displayUsername: command.username,
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},
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},
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})
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return { id: result.user.id }
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}
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case "createThread": {
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const { db, query } = yield* Database
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const id = crypto.randomUUID()
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const [row] = yield* query(() =>
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db.insert(threads).values({ id, userId }).returning({
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id: threads.id,
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title: threads.title,
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updatedAt: threads.updatedAt,
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}),
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)
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if (!row)
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return yield* new AppError({
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message: "The conversation could not be created.",
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status: 503,
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})
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return { ...row, updatedAt: row.updatedAt.toISOString() }
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}
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case "getThread": {
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const { db, query } = yield* Database
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const [row] = yield* query(() =>
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db
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.select({
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id: threads.id,
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title: threads.title,
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messages: threads.messages,
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})
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.from(threads)
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.where(and(eq(threads.id, command.id), eq(threads.userId, userId)))
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.limit(1),
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)
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if (!row)
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return yield* new AppError({
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message: "The conversation was not found.",
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status: 404,
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})
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return row
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}
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case "deleteThread": {
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const { db, query } = yield* Database
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const rows = yield* query(() =>
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db
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.delete(threads)
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.where(and(eq(threads.id, command.id), eq(threads.userId, userId)))
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.returning({ id: threads.id }),
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)
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if (!rows[0])
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return yield* new AppError({
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message: "The conversation was not found.",
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status: 404,
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})
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return { ok: true as const }
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}
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}
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})
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