From 8e72aa3be2c71846346f9131c074daf44a73459a Mon Sep 17 00:00:00 2001
From: Ekaitz Zarraga <ekaitz@elenq.tech>
Date: Sat, 30 Sep 2023 21:12:12 +0200
Subject: neocities: add cli tool: key subcommand works

---
 Makefile.am          |  1 +
 hall.scm             |  1 +
 neocities/cli.scm    | 58 +++++++++++++++++++++++++++++++
 scripts/neocities.in | 97 ++++++++++++++++++++++++++++++++++++++--------------
 4 files changed, 132 insertions(+), 25 deletions(-)
 create mode 100644 neocities/cli.scm

diff --git a/Makefile.am b/Makefile.am
index 09462cc..8dff344 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -34,6 +34,7 @@ SUFFIXES = .scm .go
 
 SOURCES = neocities/api.scm \
           neocities/requests.scm \
+          neocities/cli.scm \
           neocities/mime.scm
 
 TESTS = tests/requests.scm
diff --git a/hall.scm b/hall.scm
index 4916347..8be7006 100644
--- a/hall.scm
+++ b/hall.scm
@@ -18,6 +18,7 @@
               "neocities"
               ((scheme-file "api")
                (scheme-file "requests")
+               (scheme-file "cli")
                (scheme-file "mime")))))
          (tests
            ((directory "tests" ((scheme-file "requests")))))
diff --git a/neocities/cli.scm b/neocities/cli.scm
new file mode 100644
index 0000000..706e715
--- /dev/null
+++ b/neocities/cli.scm
@@ -0,0 +1,58 @@
+(define-module (neocities cli)
+  #:use-module (neocities api)
+  #:use-module (ice-9 format)
+  #:export (
+    neocities-run
+))
+
+(define %user (getenv "NEOCITIES_USER"))
+(define %pass (getenv "NEOCITIES_PASS"))
+(define %key  (getenv "NEOCITIES_KEY"))
+(define %host (or (getenv "NEOCITIES_HOST") "neocities.org"))
+
+(define %auth
+  (cond
+    (%key (make-neocities-auth-api-key %key))
+    ((and %user %pass) (make-neocities-auth-basic %user %pass))
+    (else (begin
+            (format (current-error-port) "ERROR: Missing authentication method~&")
+            (exit 1)))))
+
+(define %api (make-neocities-api %host %auth))
+
+
+(define (neocities-cmd-list args)
+  (when (not (= 1 (length args)))
+    (format (current-error-port) "USAGE: neocities list DIRECTORY~&")
+    (exit 1))
+  (neocities-list %api (car args)))
+
+(define (neocities-cmd-key args)
+  (when (not (= 0 (length args)))
+    (format (current-error-port) "USAGE: neocities key~&")
+    (exit 1))
+  (let ((key-pair (assoc "api_key" (neocities-key %api))))
+    (format #t "~a~&" (cdr key-pair))))
+
+(define (neocities-cmd-upload args) #f)
+(define (neocities-cmd-delete args) #f)
+(define (neocities-cmd-info args) #f)
+
+(define (command-not-known command)
+  (format (current-error-port) "Command not known ~A~&" command)
+  (exit 1))
+
+;; TODO: generate docs automatically from here?
+(define neocities-commands
+  `((list   . ,neocities-cmd-list)
+    (upload . ,neocities-cmd-upload)
+    (delete . ,neocities-cmd-delete)
+    (info   . ,neocities-cmd-info)
+    (key    . ,neocities-cmd-key)))
+
+(define (lookup-command command)
+  (let ((value (assoc command neocities-commands)))
+    (and value (cdr value))))
+
+(define (neocities-run command args)
+  ((or (lookup-command command) (command-not-known command)) args))
diff --git a/scripts/neocities.in b/scripts/neocities.in
index f431e13..c2be195 100644
--- a/scripts/neocities.in
+++ b/scripts/neocities.in
@@ -31,32 +31,79 @@
 ;;
 ;;; Code:
 
-(use-modules (neocities api))
-
-
-; Commands
-;
-; AUTH
-;    export NEOCITIES_USER
-;    export NEOCITIES_PASS
-;    or
-;    export NEOCITIES_KEY
-;    or
-;    --prompt
-;
-; TARGET
-;   --host HOSTNAME
-;
-; COMMANDS
-;   list -d DIRECTORY
-;   upload LOCAL -to REMOTE LOCAL -to REMOTE ??
-;   delete file ...
-;   info
-;   key
+(use-modules (neocities cli)
+             (ice-9 match))
+
+(define (help)
+  (format #t "
+~A
+
+USAGE:
+
+  ENVIRONMENT VARIABLES:
+      Export them:
+        export NEOCITIES_USER=my_username
+        ...
+      Or use them in the command line call
+        NEOCITIES_USER=my_username ... neocities
+
+  Authentication:
+    Your credentials
+      export NEOCITIES_USER=my_username
+      export NEOCITIES_PASS=my_password
+    Or your API key:
+      export NEOCITIES_KEY=my_key
+
+  Target:
+    export NEOCITIES_HOST  # defaults to neocities.org
+
+  USAGE:
+    neocities --help/--version
+    neocities COMMAND
+
+    Commands:
+      neocities list DIRECTORY
+      neocities upload LOCAL -to REMOTE LOCAL -to REMOTE ??
+      neocities delete FILE [...]
+      neocities info
+      neocities key
+~%" (car (command-line))))
+
+(define (version)
+  (format #t "
+~A
+
+VERSION: @PACKAGE_VERSION@
+
+   Copyright (C) 2023 Ekaitz Zarraga <ekaitz@elenq.tech>
+
+   Author: Ekaitz Zarraga <ekaitz@elenq.tech>
+
+   guile-neocities is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by the Free
+   Software Foundation; either version 3 of the License, or (at your option)
+   any later version.
+
+   guile-neocities is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+   or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+   more details.
+~%" (car (command-line))))
+
+(define (subcommand? arg)
+  (not (string-prefix? "-" arg)))
 
 (define* (main #:optional (args (command-line)))
   "Entry point for the commandline application.  ARGS should be a normal
 command-line list, e.g. '(\"neocities\" \"upload\" \"...\")."
-  (display "It runs")
-  (newline)
-)
+  (match args
+    ((program (or "--version" "-v"))
+     (begin (version) (exit 0)))
+    ((or (program) (program (or "--help" "-h")))
+     (begin (help) (exit 1)))
+    ((program (? subcommand? subcommand) . args*)
+     (neocities-run (string->symbol subcommand) args*))
+    ((program invalid-subcommand . args*)
+     (begin
+       (format (current-error-port) "Invalid subcommand: ~a~&" invalid-subcommand )
+       (help) (exit 1)))))
-- 
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