TODO

   1 # vim:sw=2:sts=2:
   2 - [ ] Output formats:
   3   - [x] text long
   4   - [x] text short
   5   - [ ] HTML
   6   - [ ] JSON
   7 - [ ] Convert to Typed Racket
   8   - requires: build executable (otherwise too slow)
   9 - [x] Build executable
  10   Implies fix of "collection not found" when executing the built executable
  11     outside the source directory:
  12
  13     collection-path: collection not found
  14       collection: "tt"
  15       in collection directories:
  16       context...:
  17        /usr/share/racket/collects/racket/private/collect.rkt:11:53: fail
  18        /usr/share/racket/collects/setup/getinfo.rkt:17:0: get-info
  19        /usr/share/racket/collects/racket/contract/private/arrow-val-first.rkt:555:3
  20        /usr/share/racket/collects/racket/cmdline.rkt:191:51
  21        '|#%mzc:p
  22
  23 - [ ] Support redirects
  24   - should permanent redirects update the feed somehow?
  25 - [ ] Support time ranges (i.e. reading the timeline between given time points)
  26 - [x] Implement rfc3339->epoch
  27 - [x] Remove dependency on rfc3339-old
  28 - [x] remove dependency on http-client
  29 - [ ] optional text wrap
  30 - [ ] write
  31 - [x] caching (use cache by default, unless explicitly asked for update)
  32   - [x] value --> cache
  33   - [x] value <-- cache
  34     requires: d command
  35 - [ ] timeline limits
  36 - [ ] feed set operations (perhaps better done externally?)
  37 - [ ] timeline as a result of a query (feed set op + filter expressions)
  38 - [ ] named timelines
  39 - [ ] config files
  40 - [ ] parse "following" from feed
  41   - following = <nick> <uri>
  42 - [ ] parse mentions:
  43   - @<source.nick source.url> | @<source.url>
  44 - [ ] highlight mentions
  45 - [ ] filter on mentions
  46 - [ ] highlight hashtags
  47 - [ ] filter on hashtags
  48 - [ ] hashtags as channels? initial hashtag special?
  49 - [ ] query language
  50 - [ ] console logger colors by level ('error)
  51 - [ ] file logger ('debug)
  52 - [-] commands:
  53   - [x] r | read
  54     - see timeline ops above
  55   - [ ] w | write
  56     - arg or stdin
  57     - nick expand to URI
  58   - [ ] q | query
  59     - see timeline ops above
  60     - see hashtag and channels above
  61   - [x] d | download
  62   - [x] u | upload
  63     - calls user-configured command to upload user's own feed file to their server
  64   Looks like a better CLI parser than "racket/cmdline": https://docs.racket-lang.org/natural-cli/
  65   But it is no longer necessary now that I've figured out how to chain (command-line ..) calls.
  66 - [ ] Suport immutable timelines
  67     - store individual messages
  68       - where?
  69         - something like DBM or SQLite - faster
  70         - filesystem - transparent, easily published - probably best
  71   - [ ] block(chain/tree) of twtxts
  72     - distributed twtxt.db
  73     - each twtxt.txt is a ledger
  74     - peers can verify states of ledgers
  75     - peers can publish known nick->url mappings
  76     - peers can vote on nick->url mappings
  77     - we could break time periods into blocks
  78     - how to handle the facts that many(most?) twtxt are unseen by peers
  79     - longest X wins?
  80 - [ ] Peer discovery
  81   requires:
  82     - parse mentions
  83     - parse following
  84   rough sketch from late 2019:
  85
  86         let read file =
  87             ...
  88         let write file peers =
  89             ...
  90         let fetch peer =
  91             (* Fetch could mean either or both of:
  92              * - fetch peer's we-are-twtxt.txt
  93              * - fetch peer's twtxt.txt and extract mentioned peer URIs
  94              * *)
  95             ...
  96         let test peers =
  97             ...
  98         let rec discover peers_old =
  99             let peers_all =
 100                 Set.fold peers_old ~init:peers_old ~f:(fun peers p ->
 101                     match fetch p with
 102                     | Error _ ->
 103                         (* TODO: Should p be moved to down set here? *)
 104                         log_warning ...;
 105                         peers
 106                     | Ok peers_fetched ->
 107                         Set.union peers peers_fetched
 108                 )
 109             in
 110             if Set.empty (Set.diff peers_old peers_all) then
 111                 peers_all
 112             else
 113                 discover peers_all
 114         let rec loop interval peers_old =
 115             let peers_all = discover peers_old in
 116             let (peers_up, peers_down) = test peers_all in
 117             write "peers-all.txt"  peers_all;
 118             write "peers-up.txt"   peers_up;
 119             write "peers-down.txt" peers_down;
 120             sleep interval;
 121             loop interval peers_all
 122         let () =
 123             loop (Sys.argv.(1)) (read "peers-all.txt")