.bashrc

# ~/.bashrc: executed by bash(1) for non-login shells.

# If not running interactively, don't do anything
case $- in
    *i*) ;;
      *) return;;
esac

# History settings
export HISTCONTROL=ignoreboth:erasedups
export HISTIGNORE="ls:cd:exit:history*"
export HISTSIZE=1000
export HISTFILESIZE=2000
shopt -s histappend

# Check window size after each command
shopt -s checkwinsize

# Git branch function
git_branch() {
    local branch
    branch=$(git branch --show-current 2>/dev/null)
    if [[ -n "$branch" ]]; then
        # Purple color for git branch
        echo -e "\[\e[35m\]$branch\[\e[0m\] "
    fi
}

# Color prompt setup
if [ -x /usr/bin/tput ] && tput setaf 1 >&/dev/null; then
    set_prompt() {
        local branch=$(git_branch)
        local title="\[\e]0;\u@\h: \w\a\]"
        PS1="${title}[\[\e[32m\]\A\[\e[0m\]][\[\e[34m\]\h\[\e[0m\]][${branch}\[\e[33m\]\w\[\e[0m\]]\$ "
    }
    prompt_command() {
        history -a          # Append current session history to file
        history -n          # Read new history entries from file
        set_prompt          # Set the prompt dynamically
    }
    PROMPT_COMMAND=prompt_command
else
    PS1='[\A][\h][\w]\$ '
fi

# Enable programmable completion
if ! shopt -oq posix; then
    if [ -f /usr/share/bash-completion/bash_completion ]; then
        . /usr/share/bash-completion/bash_completion
    elif [ -f /etc/bash_completion ]; then
        . /etc/bash_completion
    fi
fi

# Load aliases
[[ -f ~/.config/aliasrc ]] && . ~/.config/aliasrc

# Optimized FZF key-bindings discovery loop
for fzf_script in \
    "/usr/share/doc/fzf/examples/key-bindings.bash" \
    "$HOME/.fzf.bash" \
    "/usr/share/fzf/key-bindings.bash" \
    "/usr/share/fzf/shell/key-bindings.bash"; do
    if [[ -f "$fzf_script" ]]; then
        source "$fzf_script"
        break
    fi
done

# Keep bash history clean (Optimized: Now running strictly on exit)
cleanup-history() {
    local histfile="$HOME/.bash_history"
    [[ -r "$histfile" ]] || return
    awk '
    {
        cleaned = $0
        gsub(/[[:space:]]*$/, "", cleaned)
        if (cleaned != "") {
            last[cleaned] = NR
            line[NR] = cleaned
        }
    }
    END {
        for (i = 1; i <= NR; i++) {
            if (i in line && last[line[i]] == i) {
                print line[i]
            }
        }
    }
    ' "$histfile" > "${histfile}.tmp"
    if [[ -s "${histfile}.tmp" ]]; then
        command mv -f "${histfile}.tmp" "$histfile" >/dev/null 2>&1
    else
        rm -f "${histfile}.tmp" >/dev/null 2>&1
    fi
    history -c
    history -r
}

# Trap terminal exits to clean the history file once per session
trap cleanup-history EXIT

# Enhanced history search (CTRL-R)
__fzf_history__() {
    history -a
    history -c
    history -r
    local line
    line=$(history | fzf --height 100% --tac --tiebreak=index --no-sort --exact \
            --bind 'ctrl-d:page-down,ctrl-u:page-up' | sed 's/^ *[0-9]* *//')
    if [[ -n "$line" ]]; then
        READLINE_LINE=$line
        READLINE_POINT=${#line}
    fi
}

# Bind CTRL-R to the history search function in interactive shells
if [[ $- == *i* ]]; then
    bind -x '"\C-r": __fzf_history__'
fi

# FZF preview with bat if available, otherwise cat
if command -v bat >/dev/null 2>&1; then
    export FZF_CTRL_T_OPTS="--preview 'bat --color=always --line-range :500 {}'"
else
    export FZF_CTRL_T_OPTS="--preview 'cat {}'"
fi