Box: Upload a Local File with HttpCurl

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Run the reusable setup once per HttpCurl object, then select names and execute the operation. The setup is repeated here only to make this published example independently runnable. Upload a local PDF into documents, selected by name. Resolve the folder with the registry before building multipart attributes. This explicit second phase avoids literal placeholders in -F fields; files are limited to 50 MB for direct uploads.

See the Box API guide for setup and the complete workflow.

var success = false;

//  Requires Chilkat 11.5.0 or later and a previously unlocked Chilkat bundle.
//  See Global Unlock Sample.
//  Guide: Box API Guide.

success = false;

//  BEGIN ONE-TIME SETUP
//  This block is repeated so each published example can run on its own.
//  In an application, run the setup example once and pass the SAME curl object
//  to operation code below. Do not recreate it for every operation.
//  See Reusable Box HttpCurl Setup.
var curl = new CkHttpCurl();
curl.SetVar("access_token","BOX_ACCESS_TOKEN");
curl.SetVar("parent_name","/");
curl.SetVar("folder_name","images");
curl.SetVar("file_name","penguins.jpg");
curl.SetVar("destination_name","archive");
//  Box's fixed root ID is an implementation detail; callers supply names.
curl.SetVar("parent_id","0");
var setupCommand = new CkStringBuilder();
var setupReplacements;

//  Register findParent; registration sends no request.
setupCommand.SetString("curl -X GET \"https://api.box.com/2.0/folders/0/items?limit=1000&fields=id,type,name\" -H \"Authorization: Bearer ACCESS_TOKEN\"");
setupReplacements = setupCommand.Replace("ACCESS_TOKEN",curl.GetVar("access_token"));
success = curl.AddFunction("findParent",setupCommand.GetAsString());
if (success !== true) {
    console.log(curl.LastErrorText);
    return;
}

//  Register findFolder; registration sends no request.
setupCommand.SetString("curl -X GET \"https://api.box.com/2.0/folders/{{parent_id}}/items?limit=1000&fields=id,type,name\" -H \"Authorization: Bearer ACCESS_TOKEN\"");
setupReplacements = setupCommand.Replace("ACCESS_TOKEN",curl.GetVar("access_token"));
success = curl.AddFunction("findFolder",setupCommand.GetAsString());
if (success !== true) {
    console.log(curl.LastErrorText);
    return;
}

//  Register findFile; registration sends no request.
setupCommand.SetString("curl -X GET \"https://api.box.com/2.0/folders/{{folder_id}}/items?limit=1000&fields=id,type,name\" -H \"Authorization: Bearer ACCESS_TOKEN\"");
setupReplacements = setupCommand.Replace("ACCESS_TOKEN",curl.GetVar("access_token"));
success = curl.AddFunction("findFile",setupCommand.GetAsString());
if (success !== true) {
    console.log(curl.LastErrorText);
    return;
}

//  Register findDestination; registration sends no request.
setupCommand.SetString("curl -X GET \"https://api.box.com/2.0/folders/0/items?limit=1000&fields=id,type,name\" -H \"Authorization: Bearer ACCESS_TOKEN\"");
setupReplacements = setupCommand.Replace("ACCESS_TOKEN",curl.GetVar("access_token"));
success = curl.AddFunction("findDestination",setupCommand.GetAsString());
if (success !== true) {
    console.log(curl.LastErrorText);
    return;
}

//  Register getFileDetails; registration sends no request.
setupCommand.SetString("curl -X GET \"https://api.box.com/2.0/files/{{file_id}}?fields=id,sha1,file_version\" -H \"Authorization: Bearer ACCESS_TOKEN\"");
setupReplacements = setupCommand.Replace("ACCESS_TOKEN",curl.GetVar("access_token"));
success = curl.AddFunction("getFileDetails",setupCommand.GetAsString());
if (success !== true) {
    console.log(curl.LastErrorText);
    return;
}

//  Register getEnterprise; registration sends no request.
setupCommand.SetString("curl -X GET \"https://api.box.com/2.0/users/me?fields=enterprise\" -H \"Authorization: Bearer ACCESS_TOKEN\"");
setupReplacements = setupCommand.Replace("ACCESS_TOKEN",curl.GetVar("access_token"));
success = curl.AddFunction("getEnterprise",setupCommand.GetAsString());
if (success !== true) {
    console.log(curl.LastErrorText);
    return;
}

//  Initial name selections. AddOutput2 stores these WHERE values literally.
success = curl.AddOutput2("findParent","entries","name",curl.GetVar("parent_name"),true,"id","parent_id");
if (success !== true) {
    console.log(curl.LastErrorText);
    return;
}

success = curl.AddOutput2("findFolder","entries","name",curl.GetVar("folder_name"),true,"id","folder_id");
if (success !== true) {
    console.log(curl.LastErrorText);
    return;
}

success = curl.AddOutput2("findFile","entries","name",curl.GetVar("file_name"),true,"id","file_id");
if (success !== true) {
    console.log(curl.LastErrorText);
    return;
}

success = curl.AddOutput2("findDestination","entries","name",curl.GetVar("destination_name"),true,"id","destination_id");
if (success !== true) {
    console.log(curl.LastErrorText);
    return;
}

success = curl.AddOutput("getFileDetails","file_version.id","file_version_id");
if (success !== true) {
    console.log(curl.LastErrorText);
    return;
}

success = curl.AddOutput("getFileDetails","sha1","file_sha1");
if (success !== true) {
    console.log(curl.LastErrorText);
    return;
}

success = curl.AddOutput("getEnterprise","enterprise.id","enterprise_id");
if (success !== true) {
    console.log(curl.LastErrorText);
    return;
}

//  END ONE-TIME SETUP
//  The name lookups below assume each listing fits in one page (1000 items).
//  Parent and destination names select root children; folder_name selects a child
//  of parent_name. "/" selects the root parent. These are not arbitrary paths.

//  BEGIN OPERATION -- keep the configured object when reusing it.
//  Inputs are names. Retain cached IDs when the selected names have not changed.
var parentName = "/";
var folderName = "documents";
if ((curl.GetVar("parent_name") !== parentName) || ((parentName == "/") && (curl.VarDefined("parent_id") == false))) {
    curl.SetVar("parent_name",parentName);
    curl.ClearVar("parent_id");
    curl.ClearVar("folder_id");
    curl.ClearVar("file_id");
    curl.ClearVar("file_version_id");
    curl.ClearVar("file_sha1");
    if (parentName == "/") {
        curl.SetVar("parent_id","0");
    }
    else {
        success = curl.AddOutput2("findParent","entries","name",curl.GetVar("parent_name"),true,"id","parent_id");
        if (success !== true) {
            console.log(curl.LastErrorText);
            return;
        }

    }

}

if (curl.GetVar("folder_name") !== folderName) {
    curl.SetVar("folder_name",folderName);
    curl.ClearVar("folder_id");
    curl.ClearVar("file_id");
    curl.ClearVar("file_version_id");
    curl.ClearVar("file_sha1");
    success = curl.AddOutput2("findFolder","entries","name",curl.GetVar("folder_name"),true,"id","folder_id");
    if (success !== true) {
        console.log(curl.LastErrorText);
        return;
    }

}

//  Resolve the named destination first. HttpCurl does not expand variables
//  inside multipart -F attributes in the tested build, so this upload is two phases.
curl.ClearTargetOutput("*");
var authorizedCommand1 = new CkStringBuilder();
authorizedCommand1.SetString("curl -X GET \"https://api.box.com/2.0/folders/{{folder_id}}?fields=id\" -H \"Authorization: Bearer {{access_token}}\"");
var headerReplacement1 = authorizedCommand1.Replace("{{access_token}}",curl.GetVar("access_token"));
success = curl.DoYourThing(authorizedCommand1.GetAsString());
if ((success !== true) || (curl.StatusCode !== 200)) {
    console.log("Box request failed. HTTP status: " + curl.StatusCode);
    console.log("Failure reason: " + curl.FailReason);
    console.log(curl.ResponseBodyStr);
    return;
}

//  The file is read from the path following @. Keep attributes before file.
//  Resolve the multipart attributes field before passing the command to HttpCurl.
//  Box folder IDs come from configuration or a previous API response.
var uploadCommand = new CkStringBuilder();
var authorizedCommand2 = new CkStringBuilder();
authorizedCommand2.SetString("curl -X POST \"https://upload.box.com/api/2.0/files/content\" -H \"Authorization: Bearer {{access_token}}\" -F 'attributes={\"name\":\"invoice.pdf\",\"parent\":{\"id\":\"{{folder_id}}\"}}' -F \"file=@qa_data/pdf/invoice.pdf;type=application/pdf\"");
var headerReplacement2 = authorizedCommand2.Replace("{{access_token}}",curl.GetVar("access_token"));
uploadCommand.SetString(authorizedCommand2.GetAsString());
var replacements = uploadCommand.Replace("{{folder_id}}",curl.GetVar("folder_id"));
curl.ClearTargetOutput("*");
curl.ClearVar("file_id");
curl.AddTargetOutput("entries[0].id","file_id");
success = curl.DoYourThing(uploadCommand.GetAsString());
if ((success !== true) || (curl.StatusCode !== 201)) {
    console.log("Box request failed. HTTP status: " + curl.StatusCode);
    console.log("Failure reason: " + curl.FailReason);
    console.log(curl.ResponseBodyStr);
    return;
}

if (curl.VarDefined("!") !== true) {
    console.log("Expected response fields are missing.");
    return;
}

console.log("Uploaded file ID: " + curl.GetVar("file_id"));
curl.SetVar("file_name","invoice.pdf");
success = curl.AddOutput2("findFile","entries","name",curl.GetVar("file_name"),true,"id","file_id");
if (success !== true) {
    console.log(curl.LastErrorText);
    return;
}

curl.ClearVar("file_version_id");
curl.ClearVar("file_sha1");