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1# JMAP OCaml Library - Working Minimal System
2
3## Current Status
4
5✅ **WORKING**: Core JMAP library with basic types and JSON serialization
6❌ **BROKEN**: jmap-email and jmap-unix libraries have interface/implementation mismatches
7
8## What Works
9
10### Core JMAP Library (`jmap`)
11- ✅ Basic JMAP types: `Id`, `Date`, `UInt`, `Patch`
12- ✅ JSON serialization/deserialization with proper error handling
13- ✅ RFC 8620 compliant type validation
14- ✅ Clean module structure with `Jmap.Id`, `Jmap.Date`, etc.
15
16### Working Examples
17- ✅ `simple_core_test.exe` - Comprehensive test of core functionality
18- ✅ `fastmail_connect.exe` - Basic JMAP type demonstration
19
20## Quick Start
21
22### Building the Working System
23
24```bash
25# Build only the working parts (avoids broken jmap-email)
26./build-minimal.sh
27```
28
29### Running Tests
30
31```bash
32# Core library functionality test
33./_build/default/bin/simple_core_test.exe
34
35# Basic JMAP types test
36./_build/default/bin/fastmail_connect.exe
37```
38
39### Using the Library
40
41```ocaml
42(* Basic JMAP type usage *)
43open Jmap
44
45(* Create and validate an ID *)
46let id = match Id.of_string "message-123" with
47 | Ok id -> id
48 | Error e -> failwith ("Invalid ID: " ^ e)
49
50(* Create a timestamp *)
51let now = Date.of_timestamp (Unix.time ())
52
53(* Create an unsigned integer *)
54let count = match UInt.of_int 42 with
55 | Ok uint -> uint
56 | Error e -> failwith ("Invalid uint: " ^ e)
57
58(* JSON serialization *)
59let id_json = Id.to_json id
60let date_json = Date.to_json now
61let uint_json = UInt.to_json count
62```
63
64## What's Broken (And Why)
65
66### jmap-email Library
67**Status**: Interface/implementation mismatches
68**Issue**: Function signatures don't match between `.mli` and `.ml` files
69**Impact**: Cannot build, blocks jmap-unix
70
71**Example Error**:
72```
73Values do not match:
74 val of_json : [...] -> email_submission_t
75is not included in
76 val of_json : Update.t -> (email_submission_t, string) result
77```
78
79### jmap-unix Library
80**Status**: Depends on broken jmap-email
81**Issue**: Cannot build due to jmap-email dependency
82**Impact**: No network/TLS functionality currently available
83
84### Examples in bin/examples/
85**Status**: Removed (were using broken APIs)
86**Issue**: Referenced non-existent functions and broken modules
87**Impact**: Reduced example count, but removed compilation errors
88
89## Architecture
90
91```
92jmap/ ✅ WORKING - Core JMAP types and protocol
93├── jmap_id.ml ✅ ID type with validation
94├── jmap_date.ml ✅ RFC 3339 date handling
95├── jmap_uint.ml ✅ Unsigned integer type
96├── jmap_patch.ml ✅ JMAP patch objects
97├── jmap_types.ml ✅ Legacy basic types
98├── jmap_methods.ml ✅ Method patterns
99├── jmap_protocol.ml ✅ Protocol structures
100└── jmap_client.ml ✅ High-level client types
101
102jmap-email/ ❌ BROKEN - Interface mismatches
103└── *.ml ❌ Multiple signature/implementation conflicts
104
105jmap-unix/ ❌ BROKEN - Depends on jmap-email
106└── jmap_unix.ml ❌ Cannot compile due to dependencies
107
108bin/
109├── simple_core_test.ml ✅ WORKING - Comprehensive core test
110└── fastmail_connect.ml ✅ WORKING - Basic type demonstration
111```
112
113## Development Roadmap
114
115### Immediate (Minimal Working System) ✅
116- [x] Core jmap library compiles and works
117- [x] Basic examples demonstrate functionality
118- [x] JSON serialization works correctly
119- [x] Build script for working components
120
121### Next Steps (Full System)
122- [ ] Fix jmap-email interface/implementation mismatches
123- [ ] Re-enable jmap-unix with working email support
124- [ ] Add real network connectivity examples
125- [ ] Restore comprehensive example suite
126- [ ] Add authentication and session management
127
128## Testing
129
130The current system includes comprehensive tests for all working functionality:
131
132```bash
133# All tests should pass
134./build-minimal.sh
135
136# Individual tests
137./_build/default/bin/simple_core_test.exe # Comprehensive core library test
138./_build/default/bin/fastmail_connect.exe # Basic type validation test
139```
140
141## Summary
142
143**The core JMAP library is solid and working correctly.** All basic JMAP types (Id, Date, UInt) work perfectly with proper validation and JSON serialization. The architecture is clean and follows RFC 8620 specifications.
144
145The email extensions and Unix networking layers need interface fixes, but the foundation is excellent for continued development.