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// OAuth Token schemas
export const TokenExchangeParamsSchema = z.object({
clientId: z.string(),
clientSecret: z.string(),
code: z.string(),
redirectUri: z.string()
})
export const TokenResponseSchema = z.object({
access_token: z.string(),
refresh_token: z.string().optional(),
expires_in: z.number(),
scope: z.string().optional(),
token_type: z.string()
})
export const TokenErrorResponseSchema = z.object({
error: z.string(),
error_description: z.string().optional()
})
// Google Drive API schemas
export const DriveFileSchema = z.object({
id: z.string(),
name: z.string(),
webViewLink: z.string().optional().nullable(),
createdTime: z.string().optional(),
mimeType: z.string().optional()
})
export const DriveFilesListResponseSchema = z.object({
files: z.array(DriveFileSchema)
})
export const DriveListFilesParamsSchema = z.object({
parentFolderId: z.string(),
mimeType: z.string().optional(),
accessToken: z.string(),
orderBy: z.string().optional(),
fields: z.string().optional()
})
export const DriveErrorResponseSchema = z.object({
error: z.object({
errors: z.array(z.object({
domain: z.string(),
reason: z.string(),
message: z.string()
})).optional(),
code: z.number(),
message: z.string()
})
})
// Type exports
export type TokenExchangeParams = z.infer<typeof TokenExchangeParamsSchema>
export type TokenResponse = z.infer<typeof TokenResponseSchema>
export type TokenErrorResponse = z.infer<typeof TokenErrorResponseSchema>
export type DriveFile = z.infer<typeof DriveFileSchema>
export type DriveFilesListResponse = z.infer<typeof DriveFilesListResponseSchema>
export type DriveListFilesParams = z.infer<typeof DriveListFilesParamsSchema>
export type DriveErrorResponse = z.infer<typeof DriveErrorResponseSchema>
export async function exchangeCodeForTokens(params: TokenExchangeParams): Promise<TokenResponse> {
const validatedParams = TokenExchangeParamsSchema.parse(params)
const tokenResponse = await fetch('https://oauth2.googleapis.com/token', {
method: 'POST',
headers: {
'Content-Type': 'application/x-www-form-urlencoded',
},
body: new URLSearchParams({
client_id: validatedParams.clientId,
client_secret: validatedParams.clientSecret,
code: validatedParams.code,
grant_type: 'authorization_code',
redirect_uri: validatedParams.redirectUri
})
})
if (!tokenResponse.ok) {
const errorText = await tokenResponse.text()
let errorData: TokenErrorResponse
try {
errorData = TokenErrorResponseSchema.parse(JSON.parse(errorText))
} catch {
throw new Error(`Token exchange failed: ${errorText}`)
}
throw new Error(`OAuth error: ${errorData.error}${errorData.error_description ? ` - ${errorData.error_description}` : ''}`)
}
const tokens = await tokenResponse.json()
return TokenResponseSchema.parse(tokens)
}
export async function listDriveFiles(params: DriveListFilesParams): Promise<DriveFilesListResponse> {
const validatedParams = DriveListFilesParamsSchema.parse(params)
// Build query based on parameters
const queryParts = [`'${validatedParams.parentFolderId}' in parents`, 'trashed=false']
if (validatedParams.mimeType) {
queryParts.push(`mimeType='${validatedParams.mimeType}'`)
}
const query = queryParts.join(' and ')
const listUrl = new URL('https://www.googleapis.com/drive/v3/files')
listUrl.searchParams.append('q', query)
listUrl.searchParams.append('fields', validatedParams.fields || 'files(id,name,webViewLink,createdTime)')
listUrl.searchParams.append('orderBy', validatedParams.orderBy || 'name')
const listResponse = await fetch(listUrl.toString(), {
headers: {
'Authorization': `Bearer ${validatedParams.accessToken}`
}
})
if (!listResponse.ok) {
const errorText = await listResponse.text()
let errorData: DriveErrorResponse
try {
errorData = DriveErrorResponseSchema.parse(JSON.parse(errorText))
throw new Error(`Drive API error: ${errorData.error.message}`)
} catch (parseError) {
throw new Error(`Failed to list files: ${errorText}`)
}
}
const result = await listResponse.json()
return DriveFilesListResponseSchema.parse(result)
}
// Token refresh
export async function refreshAccessToken(params: TokenExchangeParams): Promise<TokenResponse> {
const refreshParams = {
clientId: params.clientId,
clientSecret: params.clientSecret,
refreshToken: params.code, // In refresh flow, 'code' contains the refresh token
grantType: 'refresh_token' as const
}
const tokenResponse = await fetch('https://oauth2.googleapis.com/token', {
method: 'POST',
headers: {
'Content-Type': 'application/x-www-form-urlencoded',
},
body: new URLSearchParams({
client_id: refreshParams.clientId,
client_secret: refreshParams.clientSecret,
refresh_token: refreshParams.refreshToken,
grant_type: refreshParams.grantType
})
})
if (!tokenResponse.ok) {
const errorText = await tokenResponse.text()
let errorData: TokenErrorResponse
try {
errorData = TokenErrorResponseSchema.parse(JSON.parse(errorText))
} catch {
throw new Error(`Token refresh failed: ${errorText}`)
}
throw new Error(`OAuth error: ${errorData.error}${errorData.error_description ? ` - ${errorData.error_description}` : ''}`)
}
const tokens = await tokenResponse.json()
return TokenResponseSchema.parse(tokens)
}
// Get file info
export const DriveFileInfoSchema = z.object({
id: z.string(),
name: z.string(),
mimeType: z.string(),
parents: z.array(z.string()).optional()
})
export type DriveFileInfo = z.infer<typeof DriveFileInfoSchema>
export async function getDriveFileInfo(fileId: string, accessToken: string, fields: string = 'id,name,mimeType,parents'): Promise<DriveFileInfo> {
const response = await fetch(`https://www.googleapis.com/drive/v3/files/${fileId}?fields=${fields}`, {
headers: {
'Authorization': `Bearer ${accessToken}`
}
})
if (!response.ok) {
const errorText = await response.text()
throw new Error(`Failed to get file info: ${errorText}`)
}
const data = await response.json()
return DriveFileInfoSchema.parse(data)
}
// Create folder
export const CreateFolderParamsSchema = z.object({
name: z.string(),
parentId: z.string(),
accessToken: z.string()
})
export const CreateFolderResponseSchema = z.object({
id: z.string(),
name: z.string(),
webViewLink: z.string().optional()
})
export type CreateFolderParams = z.infer<typeof CreateFolderParamsSchema>
export type CreateFolderResponse = z.infer<typeof CreateFolderResponseSchema>
export async function createDriveFolder(params: CreateFolderParams): Promise<CreateFolderResponse> {
const validatedParams = CreateFolderParamsSchema.parse(params)
const folderMetadata = {
name: validatedParams.name,
mimeType: 'application/vnd.google-apps.folder',
parents: [validatedParams.parentId]
}
const createResponse = await fetch('https://www.googleapis.com/drive/v3/files?fields=id,name,webViewLink', {
method: 'POST',
headers: {
'Authorization': `Bearer ${validatedParams.accessToken}`,
'Content-Type': 'application/json'
},
body: JSON.stringify(folderMetadata)
})
if (!createResponse.ok) {
const errorText = await createResponse.text()
throw new Error(`Failed to create folder: ${errorText}`)
}
const folder = await createResponse.json()
return CreateFolderResponseSchema.parse(folder)
}
// Delete file
export async function deleteDriveFile(fileId: string, accessToken: string): Promise<void> {
const deleteResponse = await fetch(`https://www.googleapis.com/drive/v3/files/${fileId}`, {
method: 'DELETE',
headers: {
'Authorization': `Bearer ${accessToken}`
}
})
if (!deleteResponse.ok) {
const errorText = await deleteResponse.text()
throw new Error(`Failed to delete file: ${errorText}`)
}
} |