open.sh

#!/usr/bin/env bash

# Check for dependencies
if ! command -v fzf &> /dev/null; then
    echo "fzf is required but it's not installed. Exiting."
    exit 1
fi

locale="en_US"
locale=${locale%%_*} # Extract just the first part (e.g., "en" from "en_US")

input="$1"
# Determine if input is a URI with a scheme, otherwise get realpath or return an error
if [[ "$input" =~ ^(https?|ftp|mailto|tel|sip|sips|magnet|ssh|sftp|webcal|rtsp|ldap|xmpp|bitcoin|ethereum|litecoin|vnc|steam|geo): ]]; then
    uri_scheme="${BASH_REMATCH[1]}"
    mime_type="x-scheme-handler/$uri_scheme"
elif [[ -e "$input" ]]; then
    file_path=$(realpath "$input")
    if [[ -d "$file_path" ]]; then
        mime_type="inode/directory"
    else
        mime_type=$(xdg-mime query filetype "$file_path")
    fi
else
    echo "Invalid input or path does not exist: ${input}"
    exit 1
fi

# Function to parse .desktop files
parse_desktop_files() {
    local search_path mime_filter="$1"
    declare -A appsExecMap
    if [[ -n "$mime_filter" ]]; then
        search_path=$(grep -rls "^MimeType=.*$mime_filter" /usr/share/applications/ ~/.local/share/applications/)
    else
        search_path=$(find /usr/share/applications/ ~/.local/share/applications/ -name "*.desktop")
    fi

    while IFS= read -r file; do
        local name=$(awk -F "=" -v locale="$locale" -v RS="\n" '/^\[Desktop Entry\]/ {flag=1; next} /^\[/ {flag=0} flag && /^Name(\['"$locale"'\])?=/' "$file" | head -n 1 | cut -d= -f2-)
        local exec=$(awk -F "=" -v RS="\n" '/^\[Desktop Entry\]/ {flag=1; next} /^\[/ {flag=0} flag && /^Exec=/' "$file" | head -n 1 | cut -d= -f2-)

        if [[ -n "$name" && -n "$exec" ]]; then
            appsExecMap["$name"]="$exec"
        fi
    done <<< "$search_path"

    for name in "${!appsExecMap[@]}"; do
        printf "%s\n" "$name"
    done
}

compatible_apps=$(parse_desktop_files "$mime_type")

other_option="Other application"
selected_app=$(printf "%s\n%s" "$compatible_apps" "$other_option" | fzf --prompt="Select an application: ")

if [[ "$selected_app" == "Other application" ]]; then
    all_apps=$(parse_desktop_files)
    selected_app=$(printf "%s" "$all_apps" | fzf --prompt="Select an application: ")
fi

if [[ "$selected_app" != "Other application" && -n "$selected_app" ]]; then
    exec_command=$(grep -rls "^Name=$selected_app" /usr/share/applications/ ~/.local/share/applications/ | xargs grep -hs "^Exec=" | head -n 1 | cut -d "=" -f2-)
    # Adjust command placeholders
    exec_command=${exec_command//%U/"'$input'"}
    exec_command=${exec_command//%u/"'$input'"}
    exec_command=${exec_command//%F/"'$file_path'"}
    exec_command=${exec_command//%f/"'$file_path'"}
    exec_command=${exec_command//%i/""}
    exec_command=${exec_command//%c/""}
    exec_command=${exec_command//%k/""}
    exec_command=${exec_command//%v/""}

    echo "Executing: $exec_command"
    eval "$exec_command"
else
    echo "No application selected or found for execution. Exiting."
    exit 1
fi