|
| 1 | +/** |
| 2 | + * Non-blocking model auto-refresh for plugin startup. |
| 3 | + * |
| 4 | + * Discovers currently available models from cursor-agent and merges them |
| 5 | + * into the opencode.json config. Only adds new models — never removes |
| 6 | + * user-configured ones. Safe to call fire-and-forget; all errors are |
| 7 | + * caught and logged silently. |
| 8 | + */ |
| 9 | +import { |
| 10 | + existsSync as nodeExistsSync, |
| 11 | + readFileSync as nodeReadFileSync, |
| 12 | + writeFileSync as nodeWriteFileSync, |
| 13 | +} from "node:fs"; |
| 14 | +import { discoverModelsFromCursorAgent, type DiscoveredModel } from "../cli/model-discovery.js"; |
| 15 | +import { resolveOpenCodeConfigPath } from "../plugin-toggle.js"; |
| 16 | +import { createLogger, type Logger } from "../utils/logger.js"; |
| 17 | + |
| 18 | +const log = createLogger("model-sync"); |
| 19 | +const PROVIDER_ID = "cursor-acp"; |
| 20 | + |
| 21 | +type ModelConfigEntry = { name: string }; |
| 22 | +type ProviderConfig = { models?: Record<string, unknown> } & Record<string, unknown>; |
| 23 | +type OpenCodeConfig = { |
| 24 | + provider?: Record<string, ProviderConfig | undefined>; |
| 25 | +} & Record<string, unknown>; |
| 26 | +type AutoRefreshModelsDeps = { |
| 27 | + defer: () => Promise<void>; |
| 28 | + discoverModels: () => DiscoveredModel[]; |
| 29 | + env: NodeJS.ProcessEnv; |
| 30 | + existsSync: (path: string) => boolean; |
| 31 | + log: Logger; |
| 32 | + readFileSync: (path: string, encoding: BufferEncoding) => string; |
| 33 | + writeFileSync: (path: string, data: string, encoding: BufferEncoding) => void; |
| 34 | +}; |
| 35 | + |
| 36 | +const defaultDeps: AutoRefreshModelsDeps = { |
| 37 | + defer: () => Promise.resolve(), |
| 38 | + discoverModels: discoverModelsFromCursorAgent, |
| 39 | + env: process.env, |
| 40 | + existsSync: nodeExistsSync, |
| 41 | + log, |
| 42 | + readFileSync: nodeReadFileSync, |
| 43 | + writeFileSync: nodeWriteFileSync, |
| 44 | +}; |
| 45 | + |
| 46 | +function isRecord(value: unknown): value is Record<string, unknown> { |
| 47 | + return typeof value === "object" && value !== null && !Array.isArray(value); |
| 48 | +} |
| 49 | + |
| 50 | +function parseConfig(raw: string): OpenCodeConfig | null { |
| 51 | + try { |
| 52 | + const parsed = JSON.parse(raw); |
| 53 | + return isRecord(parsed) ? (parsed as OpenCodeConfig) : null; |
| 54 | + } catch { |
| 55 | + return null; |
| 56 | + } |
| 57 | +} |
| 58 | + |
| 59 | +function getProviderConfig(config: OpenCodeConfig): ProviderConfig | null { |
| 60 | + if (!isRecord(config.provider)) { |
| 61 | + return null; |
| 62 | + } |
| 63 | + |
| 64 | + const provider = config.provider[PROVIDER_ID]; |
| 65 | + return isRecord(provider) ? (provider as ProviderConfig) : null; |
| 66 | +} |
| 67 | + |
| 68 | +function getExistingModels(provider: ProviderConfig): Record<string, unknown> { |
| 69 | + return isRecord(provider.models) ? { ...provider.models } : {}; |
| 70 | +} |
| 71 | + |
| 72 | +function yieldForFireAndForget(): Promise<void> { |
| 73 | + return Promise.resolve(); |
| 74 | +} |
| 75 | + |
| 76 | +/** |
| 77 | + * Auto-refresh models at plugin startup. |
| 78 | + * |
| 79 | + * - Reads the current opencode.json config |
| 80 | + * - Queries cursor-agent for available models |
| 81 | + * - Merges discovered models into the provider config (additive only) |
| 82 | + * - Writes back if any new models were added |
| 83 | + * |
| 84 | + * This function never throws. All failures are logged at debug level |
| 85 | + * and silently ignored so plugin startup is never blocked. |
| 86 | + */ |
| 87 | +export async function autoRefreshModels( |
| 88 | + deps: Partial<AutoRefreshModelsDeps> = {}, |
| 89 | +): Promise<void> { |
| 90 | + const resolvedDeps: AutoRefreshModelsDeps = { |
| 91 | + ...defaultDeps, |
| 92 | + defer: yieldForFireAndForget, |
| 93 | + ...deps, |
| 94 | + }; |
| 95 | + |
| 96 | + await resolvedDeps.defer(); |
| 97 | + |
| 98 | + try { |
| 99 | + const configPath = resolveOpenCodeConfigPath(resolvedDeps.env); |
| 100 | + if (!resolvedDeps.existsSync(configPath)) { |
| 101 | + resolvedDeps.log.debug("Config file not found, skipping model auto-refresh", { configPath }); |
| 102 | + return; |
| 103 | + } |
| 104 | + |
| 105 | + const raw = resolvedDeps.readFileSync(configPath, "utf8"); |
| 106 | + const config = parseConfig(raw); |
| 107 | + if (!config) { |
| 108 | + resolvedDeps.log.debug("Config file is not valid JSON, skipping model auto-refresh"); |
| 109 | + return; |
| 110 | + } |
| 111 | + |
| 112 | + const provider = getProviderConfig(config); |
| 113 | + if (!provider) { |
| 114 | + resolvedDeps.log.debug("Provider section not found in config, skipping model auto-refresh"); |
| 115 | + return; |
| 116 | + } |
| 117 | + |
| 118 | + const existingModels = getExistingModels(provider); |
| 119 | + let discovered: DiscoveredModel[]; |
| 120 | + try { |
| 121 | + discovered = resolvedDeps.discoverModels(); |
| 122 | + } catch (err) { |
| 123 | + resolvedDeps.log.debug("cursor-agent model discovery failed, skipping auto-refresh", { |
| 124 | + error: String(err), |
| 125 | + }); |
| 126 | + return; |
| 127 | + } |
| 128 | + |
| 129 | + let addedCount = 0; |
| 130 | + for (const model of discovered) { |
| 131 | + if (Object.prototype.hasOwnProperty.call(existingModels, model.id)) continue; |
| 132 | + existingModels[model.id] = { name: model.name } satisfies ModelConfigEntry; |
| 133 | + addedCount++; |
| 134 | + } |
| 135 | + |
| 136 | + if (addedCount === 0) { |
| 137 | + resolvedDeps.log.debug("Model auto-refresh: no new models found", { |
| 138 | + existing: Object.keys(existingModels).length, |
| 139 | + discovered: discovered.length, |
| 140 | + }); |
| 141 | + return; |
| 142 | + } |
| 143 | + |
| 144 | + provider.models = existingModels; |
| 145 | + resolvedDeps.writeFileSync(configPath, `${JSON.stringify(config, null, 2)}\n`, "utf8"); |
| 146 | + resolvedDeps.log.info("Model auto-refresh: added new models", { |
| 147 | + added: addedCount, |
| 148 | + total: Object.keys(existingModels).length, |
| 149 | + }); |
| 150 | + } catch (err) { |
| 151 | + resolvedDeps.log.debug("Model auto-refresh failed", { error: String(err) }); |
| 152 | + } |
| 153 | +} |
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