fixup! feat: update zsh configs

zsh/.zshrc

@@ -157,11 +157,32 @@ export PYENV_ROOT="$HOME/.pyenv"
 eval "$(pyenv init -)"
 eval "$(pyenv virtualenv-init -)"
 
+### Bat (better cat)
+export BAT_THEME=tokyonight_moon
+
 ### fzf configuration
 eval "$(fzf --zsh)"
 
-### Bat (better cat)
-export BAT_THEME=tokyonight_moon
+### Setup fzf previews
+show_file_or_dir_preview="if [ -d {} ]; then eza --tree --color=always {} | head -200; else bat -n --color=always --line-range :500 {}; fi"
+
+export FZF_CTRL_T_OPTS="--preview '$show_file_or_dir_preview'"
+export FZF_ALT_C_OPTS="--preview 'eza --tree --color=always {} | head -200'"
+
+# Advanced customization of fzf options via _fzf_comprun function
+# - The first argument to the function is the name of the command.
+# - You should make sure to pass the rest of the arguments to fzf.
+_fzf_comprun() {
+  local command=$1
+  shift
+
+  case "$command" in
+    cd)           fzf --preview 'eza --tree --color=always {} | head -200' "$@" ;;
+    export|unset) fzf --preview "eval 'echo ${}'"         "$@" ;;
+    ssh)          fzf --preview 'dig {}'                   "$@" ;;
+    *)            fzf --preview "$show_file_or_dir_preview" "$@" ;;
+  esac
+}
 
 ### List directories
 alias ls="eza -a --group-directories-first --icons --color=always"