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import path from "path"
import { Context, Duration, Effect, Layer, Option, Schedule, Schema } from "effect"
import { FetchHttpClient, HttpClient, HttpClientRequest } from "effect/unstable/http"
import { ModelsDev } from "@opencode-ai/schema/models-dev"
import { Global } from "./global"
import { Flag } from "./flag/flag"
import { Flock } from "./util/flock"
import { Hash } from "./util/hash"
import { FSUtil } from "./fs-util"
import { InstallationChannel, InstallationVersion } from "./installation/version"
import { EventV2 } from "./event"
import { makeGlobalNode } from "./effect/app-node"
import { httpClient } from "./effect/app-node-platform"
export const CatalogModelStatus = Schema.Literals(["alpha", "beta", "deprecated"])
export type CatalogModelStatus = typeof CatalogModelStatus.Type
const USER_AGENT = `opencode/${InstallationChannel}/${InstallationVersion}/${Flag.OPENCODE_CLIENT}`
const CostTier = Schema.Struct({
input: Schema.Finite,
output: Schema.Finite,
cache_read: Schema.optional(Schema.Finite),
cache_write: Schema.optional(Schema.Finite),
tier: Schema.Struct({
type: Schema.Literal("context"),
size: Schema.Finite,
}),
})
const Cost = Schema.Struct({
input: Schema.Finite,
output: Schema.Finite,
cache_read: Schema.optional(Schema.Finite),
cache_write: Schema.optional(Schema.Finite),
tiers: Schema.optional(Schema.Array(CostTier)),
context_over_200k: Schema.optional(
Schema.Struct({
input: Schema.Finite,
output: Schema.Finite,
cache_read: Schema.optional(Schema.Finite),
cache_write: Schema.optional(Schema.Finite),
}),
),
})
export const Model = Schema.Struct({
id: Schema.String,
name: Schema.String,
family: Schema.optional(Schema.String),
release_date: Schema.String,
attachment: Schema.Boolean,
reasoning: Schema.Boolean,
temperature: Schema.Boolean,
tool_call: Schema.Boolean,
interleaved: Schema.optional(
Schema.Union([
Schema.Literal(true),
Schema.Struct({
field: Schema.Literals(["reasoning", "reasoning_content", "reasoning_details"]),
}),
]),
),
cost: Schema.optional(Cost),
limit: Schema.Struct({
context: Schema.Finite,
input: Schema.optional(Schema.Finite),
output: Schema.Finite,
}),
modalities: Schema.optional(
Schema.Struct({
input: Schema.Array(Schema.Literals(["text", "audio", "image", "video", "pdf"])),
output: Schema.Array(Schema.Literals(["text", "audio", "image", "video", "pdf"])),
}),
),
experimental: Schema.optional(
Schema.Struct({
modes: Schema.optional(
Schema.Record(
Schema.String,
Schema.Struct({
cost: Schema.optional(Cost),
provider: Schema.optional(
Schema.Struct({
body: Schema.optional(Schema.Record(Schema.String, Schema.MutableJson)),
headers: Schema.optional(Schema.Record(Schema.String, Schema.String)),
}),
),
}),
),
),
}),
),
status: Schema.optional(CatalogModelStatus),
provider: Schema.optional(
Schema.Struct({ npm: Schema.optional(Schema.String), api: Schema.optional(Schema.String) }),
),
})
export type Model = Schema.Schema.Type<typeof Model>
export const Provider = Schema.Struct({
api: Schema.optional(Schema.String),
name: Schema.String,
env: Schema.Array(Schema.String),
id: Schema.String,
npm: Schema.optional(Schema.String),
models: Schema.Record(Schema.String, Model),
})
export type Provider = Schema.Schema.Type<typeof Provider>
export const Event = ModelsDev.Event
declare const OPENCODE_MODELS_DEV: Record<string, Provider> | undefined
export interface Interface {
readonly get: () => Effect.Effect<Record<string, Provider>>
readonly refresh: (force?: boolean) => Effect.Effect<void>
}
export class Service extends Context.Service<Service, Interface>()("@opencode/ModelsDev") {}
const layer = Layer.effect(
Service,
Effect.gen(function* () {
const fs = yield* FSUtil.Service
const events = yield* EventV2.Service
const http = HttpClient.filterStatusOk(
(yield* HttpClient.HttpClient).pipe(
HttpClient.retryTransient({
retryOn: "errors-and-responses",
times: 2,
schedule: Schedule.exponential(200).pipe(Schedule.jittered),
}),
),
)
const source = Flag.OPENCODE_MODELS_URL || "https://models.dev"
const filepath = path.join(
Global.Path.cache,
source === "https://models.dev" ? "models.json" : `models-${Hash.fast(source)}.json`,
)
const ttl = Duration.minutes(5)
const lockKey = `models-dev:${filepath}`
const fresh = Effect.fnUntraced(function* () {
const stat = yield* fs.stat(filepath).pipe(Effect.catch(() => Effect.succeed(undefined)))
if (!stat) return false
const mtime = Option.getOrElse(stat.mtime, () => new Date(0)).getTime()
return Date.now() - mtime < Duration.toMillis(ttl)
})
const fetchApi = Effect.fn("ModelsDev.fetchApi")(function* () {
return yield* HttpClientRequest.get(`${source}/api.json`).pipe(
HttpClientRequest.setHeader("User-Agent", USER_AGENT),
http.execute,
Effect.flatMap((res) => res.text),
Effect.timeout("10 seconds"),
)
})
const loadFromDisk = fs.readJson(Flag.OPENCODE_MODELS_PATH ?? filepath).pipe(
Effect.catch((error) => {
if (
Flag.OPENCODE_MODELS_PATH === undefined &&
error._tag === "FileSystemError" &&
error.method === "readJson"
) {
return fs.remove(filepath, { force: true }).pipe(Effect.ignore, Effect.as(undefined))
}
return Effect.succeed(undefined)
}),
Effect.map((v) => v as Record<string, Provider> | undefined),
)
const loadSnapshot = Effect.sync(() =>
typeof OPENCODE_MODELS_DEV === "undefined" ? undefined : OPENCODE_MODELS_DEV,
)
const fetchAndWrite = Effect.fn("ModelsDev.fetchAndWrite")(function* () {
const text = yield* fetchApi()
const tempfile = `${filepath}.${process.pid}.${Date.now()}.tmp`
yield* fs.writeWithDirs(tempfile, text).pipe(
Effect.andThen(fs.rename(tempfile, filepath)),
Effect.catch((error) =>
Effect.gen(function* () {
yield* fs.remove(tempfile, { force: true }).pipe(Effect.ignore)
return yield* Effect.fail(error)
}),
),
)
return text
})
const populate = Effect.gen(function* () {
const fromDisk = yield* loadFromDisk
if (fromDisk) return fromDisk
const snapshot = yield* loadSnapshot
if (snapshot) return snapshot
if (Flag.OPENCODE_DISABLE_MODELS_FETCH) return {}
// Flock is cross-process: concurrent opencode CLIs can race on this cache file.
const text = yield* Effect.scoped(
Effect.gen(function* () {
yield* Flock.effect(lockKey)
return yield* fetchAndWrite()
}),
)
return JSON.parse(text) as Record<string, Provider>
}).pipe(Effect.withSpan("ModelsDev.populate"), Effect.orDie)
const [cachedGet, invalidate] = yield* Effect.cachedInvalidateWithTTL(populate, Duration.infinity)
const get = (): Effect.Effect<Record<string, Provider>> => cachedGet
const refresh = Effect.fn("ModelsDev.refresh")(function* (force = false) {
if (!force && (yield* fresh())) return
yield* Effect.scoped(
Effect.gen(function* () {
yield* Flock.effect(lockKey)
// Re-check under the lock: another process may have refreshed between
// our outer check and lock acquisition.
if (!force && (yield* fresh())) return
yield* fetchAndWrite()
yield* invalidate
yield* events.publish(Event.Refreshed, {})
}),
).pipe(
Effect.tapCause((cause) => Effect.logError("Failed to fetch models.dev", { cause: cause })),
Effect.ignore,
)
})
if (!Flag.OPENCODE_DISABLE_MODELS_FETCH && !process.argv.includes("--get-yargs-completions")) {
// Schedule.spaced runs the effect once, then waits between completions.
yield* Effect.forkScoped(refresh().pipe(Effect.repeat(Schedule.spaced("60 minutes")), Effect.ignore))
}
return Service.of({ get, refresh })
}),
)
export const node = makeGlobalNode({ service: Service, layer: layer, deps: [FSUtil.node, EventV2.node, httpClient] })
export * as ModelsDev from "./models-dev"