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| 1 | +/** |
| 2 | + * src/ai-providers/opencode.js |
| 3 | + * |
| 4 | + * OpenCode provider implementation using the ai-sdk-provider-opencode-sdk package. |
| 5 | + * Delegates model selection, authentication, and provider routing to a running |
| 6 | + * OpenCode server. Task Master stays agnostic about which underlying LLM (Anthropic, |
| 7 | + * OpenAI, GitHub Copilot, etc.) OpenCode is configured to use. |
| 8 | + * |
| 9 | + * Authentication: |
| 10 | + * - Managed entirely by OpenCode — no API key required on the Task Master side. |
| 11 | + * - OpenCode users configure their providers via `opencode auth` or the config file. |
| 12 | + * |
| 13 | + * Model IDs follow the "providerID/modelID" format (e.g., "anthropic/claude-opus-4-5"), |
| 14 | + * or a bare "modelID" that routes to OpenCode's default provider. |
| 15 | + */ |
| 16 | + |
| 17 | +import { execSync } from 'child_process'; |
| 18 | +import { createOpencode } from 'ai-sdk-provider-opencode-sdk'; |
| 19 | +import { |
| 20 | + getOpencodeSettingsForCommand, |
| 21 | + getSupportedModelsForProvider |
| 22 | +} from '../../scripts/modules/config-manager.js'; |
| 23 | +import { log } from '../../scripts/modules/utils.js'; |
| 24 | +import { BaseAIProvider } from './base-provider.js'; |
| 25 | + |
| 26 | +export class OpencodeProvider extends BaseAIProvider { |
| 27 | + constructor() { |
| 28 | + super(); |
| 29 | + this.name = 'OpenCode'; |
| 30 | + this.supportedModels = getSupportedModelsForProvider('opencode'); |
| 31 | + |
| 32 | + if (this.supportedModels.length === 0) { |
| 33 | + log( |
| 34 | + 'warn', |
| 35 | + 'No supported models found for opencode provider. Check supported-models.json configuration.' |
| 36 | + ); |
| 37 | + } |
| 38 | + |
| 39 | + this.needsExplicitJsonSchema = true; |
| 40 | + this.supportsTemperature = false; |
| 41 | + |
| 42 | + this._opencodeCliChecked = false; |
| 43 | + this._opencodeCliAvailable = null; |
| 44 | + } |
| 45 | + |
| 46 | + /** |
| 47 | + * OpenCode manages its own provider credentials; no Task Master API key is needed. |
| 48 | + * @returns {boolean} |
| 49 | + */ |
| 50 | + isRequiredApiKey() { |
| 51 | + return false; |
| 52 | + } |
| 53 | + |
| 54 | + /** |
| 55 | + * Not used — OpenCode handles authentication. Returned for interface compatibility. |
| 56 | + * @returns {string} |
| 57 | + */ |
| 58 | + getRequiredApiKeyName() { |
| 59 | + return 'OPENCODE_API_KEY'; |
| 60 | + } |
| 61 | + |
| 62 | + /** |
| 63 | + * Optional CLI availability check. The SDK can auto-start an OpenCode server, |
| 64 | + * but surfacing a missing CLI early gives clearer guidance. |
| 65 | + */ |
| 66 | + validateAuth() { |
| 67 | + if (process.env.NODE_ENV === 'test') return; |
| 68 | + |
| 69 | + if (!this._opencodeCliChecked) { |
| 70 | + try { |
| 71 | + execSync('opencode --version', { stdio: 'pipe', timeout: 1000 }); |
| 72 | + this._opencodeCliAvailable = true; |
| 73 | + } catch (error) { |
| 74 | + this._opencodeCliAvailable = false; |
| 75 | + log( |
| 76 | + 'warn', |
| 77 | + 'OpenCode CLI not detected. Install it from: https://opencode.ai' |
| 78 | + ); |
| 79 | + } finally { |
| 80 | + this._opencodeCliChecked = true; |
| 81 | + } |
| 82 | + } |
| 83 | + } |
| 84 | + |
| 85 | + /** |
| 86 | + * Creates an OpenCode client instance. |
| 87 | + * @param {object} params |
| 88 | + * @param {string} [params.commandName] - Command name for settings lookup |
| 89 | + * @returns {Function} OpenCode provider function |
| 90 | + */ |
| 91 | + getClient(params = {}) { |
| 92 | + try { |
| 93 | + const settings = getOpencodeSettingsForCommand(params.commandName) || {}; |
| 94 | + |
| 95 | + return createOpencode(settings); |
| 96 | + } catch (error) { |
| 97 | + const msg = String(error?.message || ''); |
| 98 | + const code = error?.code; |
| 99 | + if (code === 'ENOENT' || /opencode/i.test(msg)) { |
| 100 | + const enhancedError = new Error( |
| 101 | + `OpenCode not available. Install it from: https://opencode.ai - Original error: ${error.message}` |
| 102 | + ); |
| 103 | + enhancedError.cause = error; |
| 104 | + this.handleError('OpenCode initialization', enhancedError); |
| 105 | + } else { |
| 106 | + this.handleError('client initialization', error); |
| 107 | + } |
| 108 | + } |
| 109 | + } |
| 110 | + |
| 111 | + /** |
| 112 | + * @returns {string[]} List of supported model IDs |
| 113 | + */ |
| 114 | + getSupportedModels() { |
| 115 | + return this.supportedModels; |
| 116 | + } |
| 117 | + |
| 118 | + /** |
| 119 | + * Check if a model is supported. |
| 120 | + * @param {string} modelId |
| 121 | + * @returns {boolean} |
| 122 | + */ |
| 123 | + isModelSupported(modelId) { |
| 124 | + if (!modelId) return false; |
| 125 | + return this.supportedModels.includes(String(modelId).toLowerCase()); |
| 126 | + } |
| 127 | +} |
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