A lot of things xD

Dockerfile

@@ -1,5 +1,7 @@
 FROM alpine:latest
-COPY tree-EN.sh /tree-EN.sh
-RUN apk add --update ncurses bash
+RUN mkdir /langs
+COPY langs /langs
+COPY tree.sh /tree.sh
+RUN apk add --update ncurses grep bash
 ENV TERM=xterm-256color
-CMD ["bash","/tree-EN.sh"]
+CMD ["bash","/tree.sh"]

README.md

@@ -2,44 +2,26 @@
 
 You know, a Christmas tree on Bash :)
 
-![Screenshot](./screenshot.png?raw=true)
+![Video](./assets/output.gif?raw=true)
 
 # Usage
 
-Via cURL:
+## Git clone
 
+```sh
+git clone https://github.com/sergiolepore/ChristBASHTree.git
+cd ./ChristBASHTree
+bash tree.sh
 ```
-# English version
-curl https://raw.githubusercontent.com/sergiolepore/ChristBASHTree/master/tree-EN.sh | bash
 
-# Spanish version
-curl https://raw.githubusercontent.com/sergiolepore/ChristBASHTree/master/tree-ES.sh | bash
-```
-
-Via Wget:
-
-```
-# English version
-wget -qO- https://raw.githubusercontent.com/sergiolepore/ChristBASHTree/master/tree-EN.sh | bash
-
-# Spanish version
-wget -qO- https://raw.githubusercontent.com/sergiolepore/ChristBASHTree/master/tree-ES.sh | bash
-```
+## Docker
 
-Docker:
-
-```
+```sh
 docker pull sergiolepore/christbashtree:latest
 docker run -it sergiolepore/christbashtree:latest
 ```
 
-Git clone and execute:
-
-```
-git clone https://github.com/sergiolepore/ChristBASHTree.git && cd ./ChristBASHTree && bash tree-EN.sh
-```
-
-__Enjoy!__
+**Enjoy!**
 
 # FAQ
 

langs/en

@@ -0,0 +1,5 @@
+#!/bin/bash
+
+MERRY_CHRISTMAS='MERRY CHRISTMAS'
+AND_LOTS_OF_CODE_IN_NEW_YEAR="And lots of CODE in $(($(date +'%Y')+1))"
+CODE='CODE'

langs/es

@@ -0,0 +1,5 @@
+#!/bin/bash
+
+MERRY_CHRISTMAS='FELICES FIESTAS'
+AND_LOTS_OF_CODE_IN_NEW_YEAR="Y mucho CODIGO en $(($(date +'%Y')+1))"
+CODE='CODIGO'

tree.sh

@@ -0,0 +1,169 @@
+#!/bin/bash
+
+trap onexit 2
+
+START_LINE=2
+CROWN_HEIGHT=10
+TRUNK_HEIGHT=2
+MSG_LANG=en
+
+CENTER=$(($(tput cols)/2))
+
+function main() {
+
+    parsed_args=$(getopt -o l:Lh -l language,list-languages,help -n 'tree.sh' -- "$@")
+    getopt_exit_code=$?
+
+    if [ $getopt_exit_code -ne 0 ] ; then
+        exit 1
+    fi
+
+    eval set -- "$parsed_args"
+
+    while :; do
+        case "$1" in
+            -h | --help ) show_help; exit 1 ;;
+			-L | --list-languages ) listlangs; exit ;;
+			-l | --language ) MSG_LANG="$2"; shift 2 ;;
+            -- ) shift; break ;;
+            * ) break ;;
+        esac
+    done
+
+    validate_language && source ./langs/$MSG_LANG
+    empty_screen
+
+    show_tree_crown
+    show_tree_trunk
+    show_messages
+
+    animate
+
+}
+
+function listlangs() {
+cat << EOF
+Code     Language
+----     --------
+es       English (default)
+en       Spanish
+EOF
+}
+
+function validate_language() {
+    if [ $(echo -n "$MSG_LANG" | wc -c) -ne 2 ] || [ ! -f "./langs/$MSG_LANG" ] ; then
+        err "language code $MSG_LANG isnt supported"
+    fi
+}
+
+function empty_screen() {
+    clear
+    tput civis
+}
+
+function show_tree_crown() {
+    tput setaf 2 
+    tput bold
+
+    for i in $(seq 1 $CROWN_HEIGHT); do
+        tput cup $((START_LINE + i - 1)) $((CENTER - i + 1))
+        for j in $(seq 1 $(((i-1)*2 + 1))); do
+            echo -n '*'
+        done
+    done
+}
+
+function show_tree_trunk() {
+    tput sgr0
+    tput setaf 3
+
+    for i in $(seq 1 $TRUNK_HEIGHT); do
+        tput cup $((START_LINE + CROWN_HEIGHT + i - 1)) $((CENTER - 1)) 
+        echo 'mWm'
+    done
+}
+
+function show_messages() {
+    tput setaf 1
+    tput bold
+
+    mc_length=$(echo -n "$MERRY_CHRISTMAS" | wc -c)
+    loc_length=$(echo -n "$AND_LOTS_OF_CODE_IN_NEW_YEAR" | wc -c)
+
+    tput cup $((START_LINE + CROWN_HEIGHT + TRUNK_HEIGHT)) $((CENTER - mc_length / 2))
+    echo $MERRY_CHRISTMAS
+
+    tput cup $((START_LINE + CROWN_HEIGHT + TRUNK_HEIGHT + 1)) $((CENTER - loc_length / 2))
+    echo $AND_LOTS_OF_CODE_IN_NEW_YEAR
+}
+
+function animate() {
+
+    color=0
+    turn_off=false
+    code_index=$(echo "$AND_LOTS_OF_CODE_IN_NEW_YEAR" | grep "$CODE" -bo | cut -d ':' -f1)
+    loc_length=$(echo -n "$AND_LOTS_OF_CODE_IN_NEW_YEAR" | wc -c)
+    xmem=()
+    ymem=()
+
+	# lights and decorations
+	while :; do
+    	for i in $(seq 1 36); do
+
+            if $turn_off ; then
+                tput setaf 2
+                tput bold
+                tput cup ${ymem[$i]} ${xmem[$i]}
+                unset xmem[$i]
+                unset ymem[$i]
+                echo -n '*'
+            fi
+
+            y=$(((RANDOM % (CROWN_HEIGHT - 1)) + 1))
+            x=$((((RANDOM % y) + 1) * 2 - 1))
+
+            ymem[$i]=$((START_LINE + y))
+            xmem[$i]=$((CENTER - y + x))
+
+            tput setaf $color
+            tput bold
+            tput cup ${ymem[$i]} ${xmem[$i]}
+            echo o
+
+            color=$(((color + 1) % 8))
+            cpos=0
+
+            for c in $(echo -n "$CODE" | grep -o .); do
+                tput cup $((START_LINE + CROWN_HEIGHT + TRUNK_HEIGHT + 1)) $(((CENTER - loc_length / 2) + code_index + cpos))
+                echo -n $c
+                cpos=$((cpos + 1))
+                sleep 0.01
+            done
+		done
+
+        $turn_off && 
+            turn_off=false || 
+            turn_off=true
+    done
+}
+
+function err() {
+    printf "tree.sh: %s\n" "$@" >&2
+    exit 1
+}
+
+function show_help() {
+    echo Usage: tree.sh [ -hL ] [ -l language_code ]
+    echo Options are:
+    echo '     -l | --language                uses the specified language (english default)'
+    echo '     -L | --list-languages          list all supported languages'
+    echo '     -h | --help                    display this message and exit'
+}
+
+function onexit() {
+    tput reset
+    tput cnorm
+    exit
+}
+
+main "$@"