feat: add script to save and load configs (#5)

In this PR we add the ability to save, move, and load configurations with a new `save.sh` script.

Reviewed-on: https://codeberg.org/vlw/curl/pulls/5
Co-authored-by: vlw <victor@vlw.se>
Co-committed-by: vlw <victor@vlw.se>

.gitignore

@@ -1,4 +1,7 @@
 curl/*
 !curl/.gitkeep
 
+saved/*
+!saved/.gitkeep
+
 disable_peer_validation

README.md

@@ -75,4 +75,14 @@ Run the `curl.sh` file from your shell and pass it two parametes for URL and req
 
 ```sh
 ./curl.sh https://example.com GET
-```
+```
+
+# Save and load configurations
+The `save.sh` script allows you to save and load configurations so you can easily switch between them.
+
+Command|Description
+--|--
+`./save.sh save <name>`|Save the current configuration where `<name>` is the name of this configuration
+`./save.sh move <name>`|Move the current configuration where `<name>` is the name of this configuration. A new empty configuration will be created.
+`./save.sh load <name>`|Load a saved configuration where `<name>` is the name of the target configuration. The current configuration will be saved as `._backup`.
+`./save.sh list`|List all saved configurations

save.sh

@@ -0,0 +1,82 @@
+#!/bin/bash
+
+SAVE_DIR="saved"
+
+main () {
+	case "$1" in
+		# Save current config to a named directory
+		"save")
+			if [ "$#" -ne 2 ]; then
+				echo -e "\e[0;91mExpected: ./save.sh save <name>\e[0m"
+				return 1
+			fi
+
+			local dir="$SAVE_DIR/$2"
+
+			mkdir $dir 2>/dev/null
+
+			shopt -s nullglob
+
+			for file in "curl/req_"*; do
+				cp -- "$file" $dir
+			done
+
+			shopt -u nullglob
+			echo "Saved current configuration to: $2"
+			;;
+
+		# Move current config to a named directory
+		"move")
+			if [ "$#" -ne 2 ]; then
+				echo -e "\e[0;91mExpected: ./save.sh move <name>\e[0m"
+				return 1
+			fi
+
+			# Save config to destination
+			./save.sh save $2
+
+			shopt -s nullglob
+
+			for file in "curl/req_"*; do
+				rm -- "$file"
+			done
+
+			shopt -u nullglob
+
+			# Create new empty config
+			./init.sh
+			;;
+
+		# Load saved config by name from directory
+		"load")
+			local dir="$SAVE_DIR/$2"
+
+			if [ ! -d $dir ]; then
+				echo -e "\e[0;91mNo save with name '$2' found\e[0m"
+				exit 1
+			fi
+
+			# Move existing config to backup directory
+			./save.sh move ._backup
+
+			shopt -s nullglob
+
+			for file in "$dir/req_"*; do
+				cp -- "$file" curl/
+			done
+
+			shopt -u nullglob
+			echo "Loaded configuration: $2"
+			;;
+
+		"list")
+			ls -l $SAVE_DIR
+			;;
+
+		*)
+			echo -e "\e[0;91mExpected: ./save.sh (save|move|load|list)\e[0m"
+			;;
+	esac
+}
+
+main $1 $2