JMAP Core implementation

[foxcpp]

Reference: https://jmap.io/spec-core.html
List below is nowhere complete.

• Fundamental types
  • Int
  • UnsignedInt
  • Date
  • UTCDate
  • Id
• Autodiscovery
• Structures for base JMAP Core objects
  • Session
  • Account
  • Core Capabilities
  • Request-level errors
  • Invocation
    • Method-level errors
    • Decode Invocation "subtypes" using type -> decoder mapping.
  • Request
  • Response
  • Set-level errors
• Core request objects
  • Object/get
  • Object/changes
  • Object/set
  • Object/copy
  • Object/query
  • Object/queryChanges
• Core/echo
• Binary data I/O
  • Downloading
  • Uploading
  • Blob/Copy method
• Push
  • StateChange structure
  • PushSubscription structure
    • PushSubscription/get
    • PushSubscription/set
  • Event Source
• Client interface
  • Get Session object
  • Interface to send request objects directly
  • "Call batch builder" interface
  • Binary I/O interface
• Server interface
  • Base backend interface
  • Binary I/O backend interface
  • Method call dispatching

[foxcpp]

I wonder if an interface like that is good to make it easier to construct Request objects...

b := client.Batch{}
b.Use(MailCapability)
b.Add("Todo/get", jmap.GetArgs{AccountId: "id", Ids: []jmap.ID{...}}, b.NextCallID())

b.NthCallID(1) // returns CallID of first request, for use in references

cl := client.Client{...}
resp, err := cl.Send(b)