Swadhin Biswas feat: implement mervelas cli engine, built-in tools, and reactive UI · 4/3/2026
0358986
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import {
type AnalyticsMetadata_I_VERIFIED_THIS_IS_NOT_CODE_OR_FILEPATHS,
logEvent,
} from '../../../services/analytics/index.js'
import { sanitizeToolNameForAnalytics } from '../../../services/analytics/metadata.js'
import type { ToolPermissionContext } from '../../../Tool.js'
import {
CLAUDE_FOLDER_PERMISSION_PATTERN,
FILE_EDIT_TOOL_NAME,
GLOBAL_CLAUDE_FOLDER_PERMISSION_PATTERN,
} from '../../../tools/FileEditTool/constants.js'
import { env } from '../../../utils/env.js'
import { generateSuggestions } from '../../../utils/permissions/filesystem.js'
import type { PermissionUpdate } from '../../../utils/permissions/PermissionUpdateSchema.js'
import {
type CompletionType,
logUnaryEvent,
} from '../../../utils/unaryLogging.js'
import type { ToolUseConfirm } from '../PermissionRequest.js'
import type {
FileOperationType,
PermissionOption,
} from './permissionOptions.js'
function logPermissionEvent(
event: 'accept' | 'reject',
completionType: CompletionType,
languageName: string | Promise<string>,
messageId: string,
hasFeedback?: boolean,
): void {
void logUnaryEvent({
completion_type: completionType,
event,
metadata: {
language_name: languageName,
message_id: messageId,
platform: env.platform,
hasFeedback: hasFeedback ?? false,
},
})
}
export type PermissionHandlerParams = {
messageId: string
path: string | null
toolUseConfirm: ToolUseConfirm
toolPermissionContext: ToolPermissionContext
onDone: () => void
onReject: () => void
completionType: CompletionType
languageName: string | Promise<string>
operationType: FileOperationType
}
export type PermissionHandlerOptions = {
hasFeedback?: boolean
feedback?: string
enteredFeedbackMode?: boolean
scope?: 'claude-folder' | 'global-claude-folder'
}
function handleAcceptOnce(
params: PermissionHandlerParams,
options?: PermissionHandlerOptions,
): void {
const { messageId, toolUseConfirm, onDone, completionType, languageName } =
params
logPermissionEvent('accept', completionType, languageName, messageId)
// Log accept submission with feedback context
logEvent('tengu_accept_submitted', {
toolName: sanitizeToolNameForAnalytics(
toolUseConfirm.tool.name,
) as AnalyticsMetadata_I_VERIFIED_THIS_IS_NOT_CODE_OR_FILEPATHS,
isMcp: toolUseConfirm.tool.isMcp ?? false,
has_instructions: !!options?.feedback,
instructions_length: options?.feedback?.length ?? 0,
entered_feedback_mode: options?.enteredFeedbackMode ?? false,
})
onDone()
toolUseConfirm.onAllow(toolUseConfirm.input, [], options?.feedback)
}
function handleAcceptSession(
params: PermissionHandlerParams,
options?: PermissionHandlerOptions,
): void {
const {
messageId,
path,
toolUseConfirm,
toolPermissionContext,
onDone,
completionType,
languageName,
operationType,
} = params
logPermissionEvent('accept', completionType, languageName, messageId)
// For claude-folder scope, grant session-level access to all .mervelas/ files
if (
options?.scope === 'claude-folder' ||
options?.scope === 'global-claude-folder'
) {
const pattern =
options.scope === 'global-claude-folder'
? GLOBAL_CLAUDE_FOLDER_PERMISSION_PATTERN
: CLAUDE_FOLDER_PERMISSION_PATTERN
const suggestions: PermissionUpdate[] = [
{
type: 'addRules',
rules: [
{
toolName: FILE_EDIT_TOOL_NAME,
ruleContent: pattern,
},
],
behavior: 'allow',
destination: 'session',
},
]
onDone()
toolUseConfirm.onAllow(toolUseConfirm.input, suggestions)
return
}
// Generate permission updates if path is provided
const suggestions = path
? generateSuggestions(path, operationType, toolPermissionContext)
: []
onDone()
// Pass permission updates directly to onAllow
toolUseConfirm.onAllow(toolUseConfirm.input, suggestions)
}
function handleReject(
params: PermissionHandlerParams,
options?: PermissionHandlerOptions,
): void {
const {
messageId,
toolUseConfirm,
onDone,
onReject,
completionType,
languageName,
} = params
logPermissionEvent(
'reject',
completionType,
languageName,
messageId,
options?.hasFeedback,
)
// Log reject submission with feedback context
logEvent('tengu_reject_submitted', {
toolName: sanitizeToolNameForAnalytics(
toolUseConfirm.tool.name,
) as AnalyticsMetadata_I_VERIFIED_THIS_IS_NOT_CODE_OR_FILEPATHS,
isMcp: toolUseConfirm.tool.isMcp ?? false,
has_instructions: !!options?.feedback,
instructions_length: options?.feedback?.length ?? 0,
entered_feedback_mode: options?.enteredFeedbackMode ?? false,
})
onDone()
onReject()
toolUseConfirm.onReject(options?.feedback)
}
export const PERMISSION_HANDLERS: Record<
PermissionOption['type'],
(params: PermissionHandlerParams, options?: PermissionHandlerOptions) => void
> = {
'accept-once': handleAcceptOnce,
'accept-session': handleAcceptSession,
reject: handleReject,
}