(Swift 2) SharePoint -- Download File (Site Collection)

Demonstrates how to download a file from SharePoint located in the /Documents folder in a site within a site collection.

The format for a URL for a resource contained in a site within a site collection is like this:

https://contoso.com/sites/teamA/_api/web/GetFolderByServerRelativeUrl('/sites/teamA/Documents')/Files('SomeDocument.docx')/$value

Notice that the "/sites/teamA" (where "teamA" is the name of the site) occurs twice in the URL.

For more information, see https://docs.microsoft.com/en-us/sharepoint/sites/sites-and-site-collections-overview

Chilkat Downloads for the Swift Programming Language MAC OS X (Cocoa) Objective-C/Swift Libs iOS Objective-C/Swift Libs

func chilkatTest() {
    // This requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // -------------------------------------------------------------------------
    // The following comments apply to SharePoint Windows classic authentication.
    // -------------------------------------------------------------------------
    // For example, imagine our SharePoint endpoint is https://xyzoffice.mycompany.com/
    // The SHAREPOINT_NTLM_DOMAIN would be "mycompany.com"
    // The SHAREPOINT_HTTPS_DOMAIN would be "xyzoffice.mycompany.com"
    // Also, the SHAREPOINT_USERNAME would be just the name, not a full email address.
    // for example, "chilkat" instead of "chilkat@mycompany.com"

    let http = CkoHttp()

    // If SharePoint Windows classic authentication is used, then set the 
    // Login, Password, LoginDomain, and NtlmAuth properties.
    http.Login = "SHAREPOINT_USERNAME"
    http.Password = "SHAREPOINT_PASSWORD"
    http.LoginDomain = "SHAREPOINT_NTLM_DOMAIN"
    http.NtlmAuth = true

    // -------------------------------------------------------------------------
    // The more common case is to use SharePoint Online authentication (via the SPOIDCRL cookie).
    // If so, do not set Login, Password, LoginDomain, and NtlmAuth, and instead
    // establish the cookie as shown at SharePoint Online Authentication
    // -------------------------------------------------------------------------

    // This example downloads the file named "Domain Name created for Exchange.docx"

    // Note: I was initially confused by the "$value" part of the URL. 
    // When I see something like $value, I immediately think that it's some sort of
    // variable or placeholder to be replaced with an actual value.  In this case,
    // the "$value" is literally part of the URL.  It's not replace with anything.

    // --------------------------------------------------------------------------------
    // IMPORTANT: The format for a URL within a site collection is like this:
    // https://SHAREPOINT_HTTPS_DOMAIN/sites/teamA/_api/web/GetFolderByServerRelativeUrl('/sites/teamA/Documents')/Files('Domain Name created for Exchange.docx')/$value
    // 
    // Notice that "/sites/teamA" is specified twice in the above sample URL.
    // --------------------------------------------------------------------------------

    var url: String? = "https://SHAREPOINT_HTTPS_DOMAIN/sites/teamA/_api/web/GetFolderByServerRelativeUrl('/sites/teamA/Documents')/Files('Domain Name created for Exchange.docx')/$value"
    var localFilePath: String? = "qa_output/x.docx"

    var success: Bool = http.Download(url, saveToPath: localFilePath)
    if success != true {
        print("\(http.LastErrorText)")
        return
    }

    print("File successfully downloaded from a SharePoint site within a site collection.")

}