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1(*
2 * jmap_thread_analyzer.ml - A tool for analyzing email threads using JMAP
3 *
4 * This binary demonstrates the thread-related capabilities of JMAP,
5 * allowing visualization and analysis of conversation threads.
6 *)
7
8open Cmdliner
9(* Using standard OCaml, no Lwt *)
10
11(* JMAP imports *)
12open Jmap
13open Jmap.Types
14open Jmap.Wire
15open Jmap.Methods
16open Jmap_email
17(* For step 2, we're only testing type checking. No implementations required. *)
18
19(* Dummy Unix module for type checking *)
20module Unix = struct
21 type tm = {
22 tm_sec : int;
23 tm_min : int;
24 tm_hour : int;
25 tm_mday : int;
26 tm_mon : int;
27 tm_year : int;
28 tm_wday : int;
29 tm_yday : int;
30 tm_isdst : bool
31 }
32
33 let time () = 0.0
34 let gettimeofday () = 0.0
35 let mktime tm = (0.0, tm)
36 let gmtime _time = {
37 tm_sec = 0; tm_min = 0; tm_hour = 0;
38 tm_mday = 1; tm_mon = 0; tm_year = 120;
39 tm_wday = 0; tm_yday = 0; tm_isdst = false;
40 }
41
42 (* JMAP connection function - would be in a real implementation *)
43 let connect ~host ~username ~password ?auth_method () =
44 failwith "Not implemented"
45end
46
47(* Dummy ISO8601 module *)
48module ISO8601 = struct
49 let string_of_datetime _tm = "2023-01-01T00:00:00Z"
50end
51
52(** Thread analyzer arguments *)
53type thread_analyzer_args = {
54 thread_id : string option;
55 search : string option;
56 limit : int;
57 days : int;
58 subject : string option;
59 participants : string list;
60 format : [`Summary | `Detailed | `Timeline | `Graph];
61 include_body : bool;
62}
63
64(* Email filter helpers - stub implementations for type checking *)
65module Email_filter = struct
66 let create_fulltext_filter text = Filter.condition (`Assoc [("text", `String text)])
67 let subject subj = Filter.condition (`Assoc [("subject", `String subj)])
68 let from email = Filter.condition (`Assoc [("from", `String email)])
69 let after date = Filter.condition (`Assoc [("receivedAt", `Assoc [("after", `Float date)])])
70 let before date = Filter.condition (`Assoc [("receivedAt", `Assoc [("before", `Float date)])])
71 let has_attachment () = Filter.condition (`Assoc [("hasAttachment", `Bool true)])
72 let unread () = Filter.condition (`Assoc [("isUnread", `Bool true)])
73 let in_mailbox id = Filter.condition (`Assoc [("inMailbox", `String id)])
74 let to_ email = Filter.condition (`Assoc [("to", `String email)])
75end
76
77(* Thread module stub *)
78module Thread = struct
79 type t = {
80 id : string;
81 email_ids : string list;
82 }
83
84 let id thread = thread.id
85 let email_ids thread = thread.email_ids
86end
87
88(** Command-line arguments **)
89
90let host_arg =
91 Arg.(required & opt (some string) None & info ["h"; "host"]
92 ~docv:"HOST" ~doc:"JMAP server hostname")
93
94let user_arg =
95 Arg.(required & opt (some string) None & info ["u"; "user"]
96 ~docv:"USERNAME" ~doc:"Username for authentication")
97
98let password_arg =
99 Arg.(required & opt (some string) None & info ["p"; "password"]
100 ~docv:"PASSWORD" ~doc:"Password for authentication")
101
102let thread_id_arg =
103 Arg.(value & opt (some string) None & info ["t"; "thread"]
104 ~docv:"THREAD_ID" ~doc:"Analyze specific thread by ID")
105
106let search_arg =
107 Arg.(value & opt (some string) None & info ["search"]
108 ~docv:"QUERY" ~doc:"Search for threads containing text")
109
110let limit_arg =
111 Arg.(value & opt int 10 & info ["limit"]
112 ~docv:"N" ~doc:"Maximum number of threads to display")
113
114let days_arg =
115 Arg.(value & opt int 30 & info ["days"]
116 ~docv:"DAYS" ~doc:"Limit to threads from the past N days")
117
118let subject_arg =
119 Arg.(value & opt (some string) None & info ["subject"]
120 ~docv:"SUBJECT" ~doc:"Search threads by subject")
121
122let participant_arg =
123 Arg.(value & opt_all string [] & info ["participant"]
124 ~docv:"EMAIL" ~doc:"Filter by participant email")
125
126let format_arg =
127 Arg.(value & opt (enum [
128 "summary", `Summary;
129 "detailed", `Detailed;
130 "timeline", `Timeline;
131 "graph", `Graph;
132 ]) `Summary & info ["format"] ~docv:"FORMAT" ~doc:"Output format")
133
134let include_body_arg =
135 Arg.(value & flag & info ["include-body"] ~doc:"Include message bodies in output")
136
137(** Thread Analysis Functionality **)
138
139(* Calculate days ago from a date *)
140let days_ago date =
141 let now = Unix.gettimeofday() in
142 int_of_float ((now -. date) /. 86400.0)
143
144(* Parse out email addresses from a participant string - simple version *)
145let extract_email participant =
146 if String.contains participant '@' then participant
147 else participant ^ "@example.com" (* Default domain if none provided *)
148
149(* Create filter for thread queries *)
150let create_thread_filter args =
151 let open Email_filter in
152 let filters = [] in
153
154 (* Add search text condition *)
155 let filters = match args.search with
156 | None -> filters
157 | Some text -> create_fulltext_filter text :: filters
158 in
159
160 (* Add subject condition *)
161 let filters = match args.subject with
162 | None -> filters
163 | Some subj -> Email_filter.subject subj :: filters
164 in
165
166 (* Add date range based on days *)
167 let filters =
168 if args.days > 0 then
169 let now = Unix.gettimeofday() in
170 let past = now -. (float_of_int args.days *. 86400.0) in
171 after past :: filters
172 else
173 filters
174 in
175
176 (* Add participant filters *)
177 let filters =
178 List.fold_left (fun acc participant ->
179 let email = extract_email participant in
180 (* This would need more complex logic to check both from and to fields *)
181 from email :: acc
182 ) filters args.participants
183 in
184
185 (* Combine all filters with AND *)
186 match filters with
187 | [] -> Filter.condition (`Assoc []) (* Empty filter *)
188 | [f] -> f
189 | filters -> Filter.and_ filters
190
191(* Display thread in requested format *)
192let display_thread thread emails format include_body snippet_map =
193 let thread_id = Thread.id thread in
194 let email_count = List.length (Thread.email_ids thread) in
195
196 (* Sort emails by date for proper display order *)
197 let sorted_emails = List.sort (fun e1 e2 ->
198 let date1 = Option.value (Types.Email.received_at e1) ~default:0.0 in
199 let date2 = Option.value (Types.Email.received_at e2) ~default:0.0 in
200 compare date1 date2
201 ) emails in
202
203 (* Get a snippet for an email if available *)
204 let get_snippet email_id =
205 match Hashtbl.find_opt snippet_map email_id with
206 | Some snippet -> snippet
207 | None -> "(No preview available)"
208 in
209
210 match format with
211 | `Summary ->
212 Printf.printf "Thread: %s (%d messages)\n\n" thread_id email_count;
213
214 (* Print first email subject as thread subject *)
215 (match sorted_emails with
216 | first :: _ ->
217 let subject = Option.value (Types.Email.subject first) ~default:"(No subject)" in
218 Printf.printf "Subject: %s\n\n" subject
219 | [] -> Printf.printf "No emails available\n\n");
220
221 (* List participants *)
222 let participants = sorted_emails |> List.fold_left (fun acc email ->
223 let from_list = Option.value (Types.Email.from email) ~default:[] in
224 from_list |> List.fold_left (fun acc addr ->
225 let email = Types.Email_address.email addr in
226 if not (List.mem email acc) then email :: acc else acc
227 ) acc
228 ) [] in
229
230 Printf.printf "Participants: %s\n\n" (String.concat ", " participants);
231
232 (* Show timespan *)
233 (match sorted_emails with
234 | first :: _ :: _ :: _ -> (* At least a few messages *)
235 let first_date = Option.value (Types.Email.received_at first) ~default:0.0 in
236 let last_date = Option.value (Types.Email.received_at (List.hd (List.rev sorted_emails))) ~default:0.0 in
237 let datetime_str = ISO8601.string_of_datetime (Unix.gmtime first_date) in
238 let first_str = String.sub datetime_str 0 (min 19 (String.length datetime_str)) in
239 let datetime_str = ISO8601.string_of_datetime (Unix.gmtime last_date) in
240 let last_str = String.sub datetime_str 0 (min 19 (String.length datetime_str)) in
241 let duration_days = int_of_float ((last_date -. first_date) /. 86400.0) in
242 Printf.printf "Timespan: %s to %s (%d days)\n\n" first_str last_str duration_days
243 | _ -> ());
244
245 (* Show message count by participant *)
246 let message_counts = sorted_emails |> List.fold_left (fun acc email ->
247 let from_list = Option.value (Types.Email.from email) ~default:[] in
248 match from_list with
249 | addr :: _ ->
250 let email = Types.Email_address.email addr in
251 let count = try Hashtbl.find acc email with Not_found -> 0 in
252 Hashtbl.replace acc email (count + 1);
253 acc
254 | [] -> acc
255 ) (Hashtbl.create 10) in
256
257 Printf.printf "Messages per participant:\n";
258 Hashtbl.iter (fun email count ->
259 Printf.printf " %s: %d messages\n" email count
260 ) message_counts;
261 Printf.printf "\n"
262
263 | `Detailed ->
264 Printf.printf "Thread: %s (%d messages)\n\n" thread_id email_count;
265
266 (* Print detailed information for each email *)
267 sorted_emails |> List.iteri (fun i email ->
268 let id = Option.value (Types.Email.id email) ~default:"(unknown)" in
269 let subject = Option.value (Types.Email.subject email) ~default:"(No subject)" in
270
271 let from_list = Option.value (Types.Email.from email) ~default:[] in
272 let from = match from_list with
273 | addr :: _ -> Types.Email_address.email addr
274 | [] -> "(unknown)"
275 in
276
277 let date = match Types.Email.received_at email with
278 | Some d ->
279 let datetime_str = ISO8601.string_of_datetime (Unix.gmtime d) in
280 String.sub datetime_str 0 (min 19 (String.length datetime_str))
281 | None -> "(unknown)"
282 in
283
284 let days = match Types.Email.received_at email with
285 | Some d -> Printf.sprintf " (%d days ago)" (days_ago d)
286 | None -> ""
287 in
288
289 Printf.printf "Email %d of %d:\n" (i+1) email_count;
290 Printf.printf " ID: %s\n" id;
291 Printf.printf " Subject: %s\n" subject;
292 Printf.printf " From: %s\n" from;
293 Printf.printf " Date: %s%s\n" date days;
294
295 let keywords = match Types.Email.keywords email with
296 | Some kw -> Types.Keywords.custom_keywords kw |> String.concat ", "
297 | None -> "(none)"
298 in
299 if keywords <> "(none)" then
300 Printf.printf " Flags: %s\n" keywords;
301
302 (* Show preview from snippet if available *)
303 Printf.printf " Snippet: %s\n" (get_snippet id);
304
305 (* Show message body if requested *)
306 if include_body then
307 match Types.Email.text_body email with
308 | Some parts when parts <> [] ->
309 let first_part = List.hd parts in
310 Printf.printf " Body: %s\n" "(body content would be here in real implementation)";
311 | _ -> ();
312
313 Printf.printf "\n"
314 )
315
316 | `Timeline ->
317 Printf.printf "Timeline for Thread: %s\n\n" thread_id;
318
319 (* Get the first email's subject as thread subject *)
320 (match sorted_emails with
321 | first :: _ ->
322 let subject = Option.value (Types.Email.subject first) ~default:"(No subject)" in
323 Printf.printf "Subject: %s\n\n" subject
324 | [] -> Printf.printf "No emails available\n\n");
325
326 (* Create a timeline visualization *)
327 if sorted_emails = [] then
328 Printf.printf "No emails to display\n"
329 else
330 let first_email = List.hd sorted_emails in
331 let last_email = List.hd (List.rev sorted_emails) in
332
333 let first_date = Option.value (Types.Email.received_at first_email) ~default:0.0 in
334 let last_date = Option.value (Types.Email.received_at last_email) ~default:0.0 in
335
336 let total_duration = max 1.0 (last_date -. first_date) in
337 let timeline_width = 50 in
338
339 let datetime_str = ISO8601.string_of_datetime (Unix.gmtime first_date) in
340 let start_str = String.sub datetime_str 0 (min 19 (String.length datetime_str)) in
341 Printf.printf "Start date: %s\n" start_str;
342
343 let datetime_str = ISO8601.string_of_datetime (Unix.gmtime last_date) in
344 let end_str = String.sub datetime_str 0 (min 19 (String.length datetime_str)) in
345 Printf.printf "End date: %s\n\n" end_str;
346
347 Printf.printf "Timeline: [%s]\n" (String.make timeline_width '-');
348
349 sorted_emails |> List.iteri (fun i email ->
350 let date = Option.value (Types.Email.received_at email) ~default:0.0 in
351 let position = int_of_float (float_of_int timeline_width *. (date -. first_date) /. total_duration) in
352
353 let from_list = Option.value (Types.Email.from email) ~default:[] in
354 let from = match from_list with
355 | addr :: _ -> Types.Email_address.email addr
356 | [] -> "(unknown)"
357 in
358
359 let datetime_str = ISO8601.string_of_datetime (Unix.gmtime date) in
360 let date_str = String.sub datetime_str 0 (min 19 (String.length datetime_str)) in
361
362 let marker = String.make timeline_width ' ' |> String.mapi (fun j c ->
363 if j = position then '*' else if j < position then ' ' else c
364 ) in
365
366 Printf.printf "%s [%s] %s: %s\n" date_str marker from (get_snippet (Option.value (Types.Email.id email) ~default:""))
367 );
368
369 Printf.printf "\n"
370
371 | `Graph ->
372 Printf.printf "Thread Graph for: %s\n\n" thread_id;
373
374 (* In a real implementation, this would build a proper thread graph based on
375 In-Reply-To and References headers. For this demo, we'll just show a simple tree. *)
376
377 (* Get the first email's subject as thread subject *)
378 (match sorted_emails with
379 | first :: _ ->
380 let subject = Option.value (Types.Email.subject first) ~default:"(No subject)" in
381 Printf.printf "Subject: %s\n\n" subject
382 | [] -> Printf.printf "No emails available\n\n");
383
384 (* Create a simple thread tree visualization *)
385 if sorted_emails = [] then
386 Printf.printf "No emails to display\n"
387 else
388 let indent level = String.make (level * 2) ' ' in
389
390 (* Very simplified threading model - in a real implementation,
391 this would use In-Reply-To and References headers *)
392 sorted_emails |> List.iteri (fun i email ->
393 let level = min i 4 in (* Simplified nesting - would be based on real reply chain *)
394
395 let id = Option.value (Types.Email.id email) ~default:"(unknown)" in
396
397 let from_list = Option.value (Types.Email.from email) ~default:[] in
398 let from = match from_list with
399 | addr :: _ -> Types.Email_address.email addr
400 | [] -> "(unknown)"
401 in
402
403 let date = match Types.Email.received_at email with
404 | Some d ->
405 let datetime_str = ISO8601.string_of_datetime (Unix.gmtime d) in
406 String.sub datetime_str 0 (min 19 (String.length datetime_str))
407 | None -> "(unknown)"
408 in
409
410 Printf.printf "%s%s [%s] %s\n"
411 (indent level)
412 (if level = 0 then "+" else if level = 1 then "|-" else "|--")
413 date from;
414
415 Printf.printf "%s%s\n" (indent (level + 4)) (get_snippet id);
416 );
417
418 Printf.printf "\n"
419
420(* Command implementation *)
421let thread_command host user password thread_id search limit days subject
422 participant format include_body : int =
423 (* Pack arguments into a record for easier passing *)
424 let args : thread_analyzer_args = {
425 thread_id; search; limit; days; subject;
426 participants = participant; format; include_body
427 } in
428
429 (* Main workflow would be implemented here using the JMAP library *)
430 Printf.printf "JMAP Thread Analyzer\n";
431 Printf.printf "Server: %s\n" host;
432 Printf.printf "User: %s\n\n" user;
433
434 (* This is where the actual JMAP calls would happen, like:
435
436 let analyze_threads () =
437 let* (ctx, session) = Jmap.Unix.connect
438 ~host ~username:user ~password
439 ~auth_method:(Jmap.Unix.Basic(user, password)) () in
440
441 (* Get primary account ID *)
442 let account_id = match Jmap.get_primary_account session Jmap_email.capability_mail with
443 | Ok id -> id
444 | Error _ -> failwith "No mail account found"
445 in
446
447 match args.thread_id with
448 | Some id ->
449 (* Analyze a specific thread by ID *)
450 let* thread_result = Thread.get ctx
451 ~account_id
452 ~ids:[id] in
453
454 (* Handle thread fetch result *)
455 ...
456
457 | None ->
458 (* Search for threads based on criteria *)
459 let filter = create_thread_filter args in
460
461 (* Email/query to find emails matching criteria *)
462 let* query_result = Email.query ctx
463 ~account_id
464 ~filter
465 ~sort:[Email_sort.received_newest_first ()]
466 ~collapse_threads:true
467 ~limit:args.limit in
468
469 (* Process query results to get thread IDs *)
470 ...
471 *)
472
473 (match thread_id with
474 | Some id ->
475 Printf.printf "Analyzing thread: %s\n\n" id;
476
477 (* Simulate a thread with some emails *)
478 let emails = 5 in
479 Printf.printf "Thread contains %d emails\n" emails;
480
481 (* In a real implementation, we would display the actual thread data here *)
482 Printf.printf "Example output format would show thread details here\n"
483
484 | None ->
485 if search <> None then
486 Printf.printf "Searching for threads containing: %s\n" (Option.get search)
487 else if subject <> None then
488 Printf.printf "Searching for threads with subject: %s\n" (Option.get subject)
489 else
490 Printf.printf "No specific thread or search criteria provided\n");
491
492 if participant <> [] then
493 Printf.printf "Filtering to threads involving: %s\n"
494 (String.concat ", " participant);
495
496 Printf.printf "Looking at threads from the past %d days\n" days;
497 Printf.printf "Showing up to %d threads\n\n" limit;
498
499 (* Simulate finding some threads *)
500 let thread_count = min limit 3 in
501 Printf.printf "Found %d matching threads\n\n" thread_count;
502
503 (* In a real implementation, we would display the actual threads here *)
504 for i = 1 to thread_count do
505 Printf.printf "Thread %d would be displayed here\n\n" i
506 done;
507
508 (* Since we're only type checking, we'll exit with success *)
509 0
510
511(* Command definition *)
512let thread_cmd =
513 let doc = "analyze email threads using JMAP" in
514 let man = [
515 `S Manpage.s_description;
516 `P "Analyzes email threads with detailed visualization options.";
517 `P "Demonstrates how to work with JMAP's thread capabilities.";
518 `S Manpage.s_examples;
519 `P " $(mname) -h jmap.example.com -u user@example.com -p secret123 -t thread123";
520 `P " $(mname) -h jmap.example.com -u user@example.com -p secret123 --search \"project update\" --format timeline";
521 ] in
522
523 let cmd =
524 Cmd.v
525 (Cmd.info "jmap-thread-analyzer" ~version:"1.0" ~doc ~man)
526 Term.(const thread_command $ host_arg $ user_arg $ password_arg $
527 thread_id_arg $ search_arg $ limit_arg $ days_arg $
528 subject_arg $ participant_arg $ format_arg $ include_body_arg)
529 in
530 cmd
531
532(* Main entry point *)
533let () = exit (Cmd.eval' thread_cmd)