forked from vv/bugafriend
135 lines
3.8 KiB
Scheme
135 lines
3.8 KiB
Scheme
(define-module (bugafriend ui)
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#:use-module (bugafriend utils registry)
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#:use-module (goblins)
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#:use-module (goblins vat)
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#:use-module (goblins ocapn ids)
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#:use-module (fibers)
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#:use-module (fibers channels)
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#:use-module (fibers conditions)
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#:use-module (srfi srfi-9)
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#:use-module (srfi srfi-1)
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#:use-module (ice-9 rdelim)
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#:use-module (ice-9 match)
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#:use-module (ice-9 exceptions)
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#:use-module (ice-9 readline)
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#:use-module (ice-9 suspendable-ports)
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#:export (say))
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;; ;; https://www.gnu.org/software/guile/manual/guile.html#Non_002dBlocking-I_002fO
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;; (let* ((input (current-input-port))
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;; (flags (fcntl input F_GETFL)))
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;; (fcntl input F_SETFL (logior O_NONBLOCK flags)))
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;; (install-suspendable-ports!)
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(define ocapn-registry #f)
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(define listener-actor #f)
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(define (is-command? str)
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(and (> (string-length str) 0) (eq? (string-ref str 0) #\/)))
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(define-record-type <console-command>
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(make-console-command name help thunk)
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console-command?
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(name console-command-name)
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(help console-command-help)
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(thunk console-command-thunk))
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(define commands
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(list
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(make-console-command
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"/quit"
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"- Exits the chat"
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(λ (args) (loop! #f)))
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(make-console-command
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"/help"
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"- Prints this help"
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(λ (args)
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(print-help)
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(loop! #t)))
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(make-console-command
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"/join"
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"<listener-id> - Switch chats to another listener"
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(λ (args)
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(unless (eq? 2 (length args))
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(error "Need one argument, the listener sturdyref!"))
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(let* ((listener-id (list-ref args 1))
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(listener-sref (string->ocapn-id listener-id)))
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(unless listener-sref
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(error "Badly formatted sturdyref!"))
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(unless ocapn-registry
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(error "Relay not yet connected."))
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(format #t "Connecting...\n")
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(on (<- ocapn-registry 'enliven listener-sref)
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(λ (l)
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(set! listener-actor l)
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(format #t "Joined chat.\n")
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(loop! #t))
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#:catch
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(λ (e)
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(format #t "Failed: ~a\n" e)
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(loop! #t))))))))
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(define (print-help)
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(format #t "Command reference:\n")
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(map (λ (x) (format #t " ~a ~a\n" (console-command-name x) (console-command-help x))) commands))
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(define command-names (map console-command-name commands))
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(define (%eval-command cmd)
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(define args (string-split cmd char-set:whitespace))
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(define matching-command (find (λ (x) (equal? (console-command-name x) (car args))) commands))
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(if matching-command
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((console-command-thunk matching-command) args)
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(begin
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(format #t "Don't know how to handle ~a.\n\n" cmd)
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(print-help)
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(loop! #t))))
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(define loop-channel (make-channel))
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(define (loop! val) (put-message loop-channel val) val)
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(define (%loop vat)
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(with-exception-handler
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(λ (e)
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(format #t "Command failed: ~s\n" e)
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(loop! #t))
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(λ ()
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(let ((line (readline)))
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(with-vat vat
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(cond
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((eq? 0 (string-length line)) (loop! #t))
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((is-command? line)
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(%eval-command line))
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(else (if listener-actor
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(on (<- listener-actor line) (λ (val) (loop! val)))
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(begin
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(format #t "Not connected to anyone yet. Use /join <sturdyref>!\n")
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(loop! #t))))))))
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#:unwind? #t))
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(define (say setup-sref)
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(define vat (spawn-vat #:name "Speaker Vat"))
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(set-readline-prompt! " 🐞 > ")
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(with-vat vat
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(format #t "Connecting to relay...\n")
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(on (prelay-sref->mycapn-registry setup-sref)
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(λ (r)
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(set! ocapn-registry r)
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(format #t "Connected.\n")
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(loop! #t))
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#:catch
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(λ (e)
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(format #t "Failed: ~a\n" e)
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(loop! #t))))
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(while (get-message loop-channel)
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(with-vat vat
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(syscaller-free-fiber
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(λ ()
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(%loop vat))))))
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