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https://github.com/aljazceru/opencode.git
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wip: zen
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Frank
@@ -1,308 +0,0 @@
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/**
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* @deprecated Use zen/v1/chat/completions instead
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*/
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import { Resource } from "@opencode/cloud-resource"
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import type { APIEvent } from "@solidjs/start/server"
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import { Database, eq, sql } from "@opencode/cloud-core/drizzle/index.js"
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import { KeyTable } from "@opencode/cloud-core/schema/key.sql.js"
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import { BillingTable, UsageTable } from "@opencode/cloud-core/schema/billing.sql.js"
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import { centsToMicroCents } from "@opencode/cloud-core/util/price.js"
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import { Identifier } from "@opencode/cloud-core/identifier.js"
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const MODELS = {
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// "anthropic/claude-sonnet-4": {
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// auth: true,
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// api: "https://api.anthropic.com",
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// apiKey: Resource.ANTHROPIC_API_KEY.value,
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// model: "claude-sonnet-4-20250514",
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// cost: {
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// input: 0.0000015,
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// output: 0.000006,
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// reasoning: 0.0000015,
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// cacheRead: 0.0000001,
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// cacheWrite: 0.0000001,
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// },
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// headerMappings: {},
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// },
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"qwen/qwen3-coder": {
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id: "qwen/qwen3-coder",
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auth: true,
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api: "https://inference.baseten.co",
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apiKey: Resource.BASETEN_API_KEY.value,
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model: "Qwen/Qwen3-Coder-480B-A35B-Instruct",
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cost: {
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input: 0.00000038,
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output: 0.00000153,
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reasoning: 0,
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cacheRead: 0,
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cacheWrite: 0,
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},
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headerMappings: {},
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},
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"grok-code": {
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id: "x-ai/grok-code-fast-1",
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auth: false,
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api: "https://api.x.ai",
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apiKey: Resource.XAI_API_KEY.value,
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model: "grok-code",
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cost: {
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input: 0,
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output: 0,
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reasoning: 0,
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cacheRead: 0,
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cacheWrite: 0,
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},
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headerMappings: {
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"x-grok-conv-id": "x-opencode-session",
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"x-grok-req-id": "x-opencode-request",
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},
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},
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}
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class AuthError extends Error {}
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class CreditsError extends Error {}
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class ModelError extends Error {}
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export async function POST(input: APIEvent) {
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try {
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const url = new URL(input.request.url)
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const body = await input.request.json()
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const MODEL = validateModel()
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const apiKey = await authenticate()
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await checkCredits()
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// Request to model provider
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const res = await fetch(new URL(url.pathname.replace(/^\/gateway/, "") + url.search, MODEL.api), {
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method: "POST",
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headers: (() => {
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const headers = input.request.headers
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headers.delete("host")
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headers.delete("content-length")
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headers.set("authorization", `Bearer ${MODEL.apiKey}`)
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Object.entries(MODEL.headerMappings ?? {}).forEach(([k, v]) => {
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headers.set(k, headers.get(v)!)
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})
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return headers
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})(),
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body: JSON.stringify({
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...body,
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model: MODEL.model,
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stream_options: {
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include_usage: true,
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},
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}),
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})
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// Scrub response headers
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const resHeaders = new Headers()
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const keepHeaders = ["content-type", "cache-control"]
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for (const [k, v] of res.headers.entries()) {
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if (keepHeaders.includes(k.toLowerCase())) {
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resHeaders.set(k, v)
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}
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}
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// Handle non-streaming response
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if (!body.stream) {
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const body = await res.json()
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await trackUsage(body)
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return new Response(JSON.stringify(body), {
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status: res.status,
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statusText: res.statusText,
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headers: resHeaders,
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})
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}
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// Handle streaming response
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const stream = new ReadableStream({
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start(c) {
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const reader = res.body?.getReader()
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const decoder = new TextDecoder()
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let buffer = ""
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function pump(): Promise<void> {
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return (
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reader?.read().then(async ({ done, value }) => {
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if (done) {
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c.close()
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return
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}
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buffer += decoder.decode(value, { stream: true })
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const parts = buffer.split("\n\n")
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buffer = parts.pop() ?? ""
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const usage = parts
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.map((part) => part.trim())
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.filter((part) => part.startsWith("data: "))
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.map((part) => {
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try {
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return JSON.parse(part.slice(6))
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} catch (e) {
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return {}
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}
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})
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.find((part) => part.usage)
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if (usage) await trackUsage(usage)
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c.enqueue(value)
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return pump()
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}) || Promise.resolve()
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)
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}
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return pump()
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},
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})
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return new Response(stream, {
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status: res.status,
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statusText: res.statusText,
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headers: resHeaders,
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})
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function validateModel() {
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if (!(body.model in MODELS)) {
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throw new ModelError(`Model ${body.model} not supported`)
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}
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return MODELS[body.model as keyof typeof MODELS]
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}
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async function authenticate() {
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try {
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const authHeader = input.request.headers.get("authorization")
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if (!authHeader || !authHeader.startsWith("Bearer ")) throw new AuthError("Missing API key.")
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const apiKey = authHeader.split(" ")[1]
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const key = await Database.use((tx) =>
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tx
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.select({
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id: KeyTable.id,
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workspaceID: KeyTable.workspaceID,
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})
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.from(KeyTable)
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.where(eq(KeyTable.key, apiKey))
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.then((rows) => rows[0]),
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)
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if (!key) throw new AuthError("Invalid API key.")
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return key
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} catch (e) {
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console.log(e)
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// ignore error if model does not require authentication
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if (!MODEL.auth) return
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throw e
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}
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}
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async function checkCredits() {
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if (!apiKey || !MODEL.auth) return
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const billing = await Database.use((tx) =>
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tx
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.select({
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balance: BillingTable.balance,
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})
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.from(BillingTable)
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.where(eq(BillingTable.workspaceID, apiKey.workspaceID))
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.then((rows) => rows[0]),
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)
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if (billing.balance <= 0) throw new CreditsError("Insufficient balance")
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}
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async function trackUsage(chunk: any) {
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console.log(`trackUsage ${apiKey}`)
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if (!apiKey) return
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const usage = chunk.usage
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const inputTokens = usage.prompt_tokens ?? 0
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const outputTokens = usage.completion_tokens ?? 0
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const reasoningTokens = usage.completion_tokens_details?.reasoning_tokens ?? 0
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const cacheReadTokens = usage.prompt_tokens_details?.cached_tokens ?? 0
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//const cacheWriteTokens = providerMetadata?.["anthropic"]?.["cacheCreationInputTokens"] ?? 0
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const cacheWriteTokens = 0
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const inputCost = MODEL.cost.input * inputTokens
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const outputCost = MODEL.cost.output * outputTokens
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const reasoningCost = MODEL.cost.reasoning * reasoningTokens
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const cacheReadCost = MODEL.cost.cacheRead * cacheReadTokens
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const cacheWriteCost = MODEL.cost.cacheWrite * cacheWriteTokens
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const costInCents = (inputCost + outputCost + reasoningCost + cacheReadCost + cacheWriteCost) * 100
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const cost = centsToMicroCents(costInCents)
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await Database.transaction(async (tx) => {
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await tx.insert(UsageTable).values({
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workspaceID: apiKey.workspaceID,
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id: Identifier.create("usage"),
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model: MODEL.id,
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inputTokens,
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outputTokens,
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reasoningTokens,
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cacheReadTokens,
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cacheWriteTokens,
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cost,
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})
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await tx
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.update(BillingTable)
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.set({
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balance: sql`${BillingTable.balance} - ${cost}`,
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})
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.where(eq(BillingTable.workspaceID, apiKey.workspaceID))
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})
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await Database.use((tx) =>
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tx
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.update(KeyTable)
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.set({ timeUsed: sql`now()` })
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.where(eq(KeyTable.id, apiKey.id)),
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)
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}
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} catch (error: any) {
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if (error instanceof AuthError) {
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return new Response(
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JSON.stringify({
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error: {
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message: error.message,
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type: "invalid_request_error",
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param: null,
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code: "unauthorized",
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},
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}),
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{
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status: 401,
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},
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)
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}
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if (error instanceof CreditsError) {
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return new Response(
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JSON.stringify({
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error: {
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message: error.message,
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type: "insufficient_quota",
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param: null,
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code: "insufficient_quota",
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},
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}),
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{
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status: 401,
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},
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)
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}
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if (error instanceof ModelError) {
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return new Response(JSON.stringify({ error: { message: error.message } }), {
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status: 401,
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})
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}
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console.log(error)
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return new Response(JSON.stringify({ error: { message: error.message } }), {
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status: 500,
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})
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}
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}
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@@ -474,6 +474,7 @@ export async function handler(
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workspaceID: apiKey.workspaceID,
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id: Identifier.create("usage"),
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model: MODEL.id,
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provider: providerName,
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inputTokens,
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outputTokens,
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reasoningTokens,
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