From bea0c1ff64d551035f1b4af748887055e63a7569 Mon Sep 17 00:00:00 2001
From: Ben Chambule <benchambule@gmail.com>
Date: Thu, 22 Aug 2024 14:29:30 +0200
Subject: [PATCH] add: default processors

---
 index.js | 132 ++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 131 insertions(+), 1 deletion(-)

diff --git a/index.js b/index.js
index 225603b..f61b1a2 100644
--- a/index.js
+++ b/index.js
@@ -3,8 +3,13 @@
 export {
     FORM,
     INFORMATION,
+
     Message,
-    Lottus
+    Lottus,
+
+    create_options_processor,
+    create_input_processor,
+    create_form_processor
 }
 
 const FORM = "FORM";
@@ -194,4 +199,129 @@ class Lottus {
 
         return result;
     }
+}
+
+
+Message.prototype.header = "";
+Message.prototype.body = "";
+Message.prototype.footer = "Powered by Lottus";
+
+
+Message.prototype.addOption = function addOption(key, label, next, params){
+    if(!this.form){
+        this.form = {options: new Map()};
+    }
+
+    if(!this.form.options){
+        this.form.options = new Map();
+    }
+
+    if(key === undefined || key === null){
+        key = this.form.options.size + 1;
+    }
+
+    if(!label){
+        throw new Error("Argument label cannot be null nor empty");
+    }
+
+    this.form.options.set(key.toString(), {label, next, params});
+}
+
+
+Message.prototype.addInput = function addInput(name, type, next){
+    if(!this.form){
+        this.form = {input: {name, type, next}};
+    }
+
+    if(!this.form.input){
+        this.form = {input: {name, type, next}};
+    }
+}
+
+
+function create_options_processor(bot){
+    async function create_options_processor(req, res){
+        const options = req.form?.options;
+
+        if(options){
+            const option = options.get(req.prompt.toString());
+
+            if(option){
+                req.selected_option = option;
+                let next = req.form?.next;
+
+                if(req.selected_option.next){
+                    next = req.selected_option.next;
+                }
+
+                return await bot.redirect(next, req);
+            } else {
+                res.error = "You selected an invalid option";
+            }
+        }
+
+        return res;
+    }
+
+    return create_options_processor;
+}
+
+
+function create_input_processor(bot){
+    async function input_processor(req, res){
+        const input = req.form?.input;
+
+        if(input){
+            req.input = input;
+            // let next = req.form?.next;
+            return await bot.redirect(input.next, req);
+        } else {
+            res.error = "You selected an invalid option";
+        }
+
+        return res;
+    }
+
+    return input_processor;
+}
+
+
+function create_form_processor(bot){
+    async function form_processor(req, res){
+        const options = req.form?.options;
+        const input = req.form?.input;
+
+        if(options){
+            const option = options.get(req.prompt);
+
+            if(option){
+                req.selected_option = option;
+                let next = req.form?.next;
+
+                if(req.selected_option.next){
+                    next = req.selected_option.next;
+                }
+
+                return await bot.redirect(next, req);
+            } else {
+                res.error = "You selected an invalid option";
+            }
+        }
+
+        if(input){
+            req.input = input;
+
+            let next = req.form?.next;
+
+            return await bot.redirect(next, req);
+        }
+
+        if(!res.error){
+            res.error = "The form has no input nor options";
+        }
+
+        return res;
+    }
+
+    return form_processor;
 }
\ No newline at end of file