#!/usr/bin/env python3
#
#       Ferit Yiğit BALABAN <fyb@fybx.dev>, 2024
#
#       fetchpy-null, fetch script alternative to neofetch
#       revision 1
import os
import sys
import subprocess as sp


def add_color(text, props):
    built       = ''
    _clr_start  = '\u001b[31m'
    _clr_end    = '\u001b[0m'

    i = 0
    p = 0
    char = lambda: text[i]
    while i < len(text):
        if char() == '{':
            built += f"{_clr_start}{props[p]}"
            p += 1
        elif char() == '}':
            built += _clr_end
        else:
            built += char()
        
        i += 1
    return built


def find_username():
    return sp.run(['whoami'], text=True, capture_output=True).stdout[0:-1]


def find_hostname():
    return sp.run(['uname', '-n'], text=True, capture_output=True).stdout[0:-1]


def main():
    props = []
    
    props.append(find_username()) # username
    props.append(find_hostname()) # hostname
    props.append('Arch GNU+Linux') # distro_name
    props.append(os.uname().release) # kernel_version

    installed_packages = sp.run(['pacman', '-Q'], text=True, capture_output=True).stdout.splitlines()
    props.append(str(len(installed_packages))) # package_count
    
    total_mem, used_mem, _, _, _, _ = map(int, os.popen('free -m').readlines()[1].split()[1:])
    def rnd(x): return round(x, 1)
    props.append(f'{rnd(used_mem / 1000)} GB / {rnd(total_mem / 1000)} GB') # mem_usage 

    with open('/proc/uptime', 'r', encoding='utf8') as file:
        uptime_seconds = float(file.readline().split()[0])
        file.close()
    
    if uptime_seconds < 60:
        uptime = str(uptime_seconds).split('.', maxsplit=1)[0] + ' seconds'
    elif uptime_seconds < 3600:
        number = str(uptime_seconds / 60).split('.', maxsplit=1)[0]
        uptime = f'{number} minute' if number == '1' else f'{number} minutes'
    else:
        number = str(uptime_seconds / 3600).split('.', maxsplit=1)[0]
        uptime = f'{number} hour' if number == '1' else f'{number} hours'
    props.append(uptime)

    txt = \
"""Hi {}, welcome to {}. I see that you're on {}, 
running with Linux {}. You've {} packages installed. 
Your RAM usage is {} and uptime is {}.\n"""
    print(add_color(txt, props))


if __name__ == '__main__':
    main()