# Completions
zmodload -i zsh/complist

unsetopt menu_complete   # do not autoselect the first completion entry
setopt always_to_end     # Always place the cursor to the end of the word completed
setopt list_packed       # The completion menu takes less space
setopt auto_menu         # Display the completion menu after two use of the TAB key
setopt complete_in_word  #  By default, the cursor goes at the end of the word when completion start. Setting this will not move the cursor and the completion will happen on both end of the word completed.

# TODO: show paginated list on tab without prompt, but do not select first entry
zstyle ':completion:*' menu yes select
zstyle ':completion:*:default' select-prompt '%F{black}%K{cyan}line %l %p%f%k'
zstyle ':completion:*:default' select-scroll 1

bindkey -M menuselect '^f' vi-insert
zstyle ':completion:*' special-dirs true
zstyle ':completion:*' matcher-list 'm:{a-zA-Z}={A-Za-z}' 'r:|=*' 'l:|=* r:|=*'
zstyle ':completion:*' use-cache yes
zstyle ':completion:*' cache-path ${XDG_CACHE_HOME:-${HOME}/.cache}/zsh/completions
zstyle ':completion:*' single-ignored show
zstyle ':completion:*:*:*:*:processes' command "ps -u $USERNAME -o pid,user,comm -w -w"

# Group by descriptions and show description nme
zstyle ':completion:*' group-name ''
zstyle ':completion:*:*:*:*:descriptions' format '%F{cyan}%d%f'

zstyle ':completion:*:*:*:*:corrections' format '%F{yellow}%d (errors: %e):%f'
zstyle ':completion:*:messages' format '  %F{purple}-- %d --%f'
zstyle ':completion:*:warnings' format '  %F{red}-- No matches found! --%f'

zstyle ":completion:*" list-colors ${(s.:.)LS_COLORS}
zstyle ':completion:*:*:kill:*:processes' list-colors '=(#b) #([0-9]#)*( *[a-z])*=34=31=33'

# Don't auto-complete uncommon/fake commands (WSL)
zstyle ':completion:*:*:*:commands' ignored-patterns '*.dll' '*.DLL' '*.nls' '*.NLS' '*.mof' '*.MOF'

# Don't autocomplete non-login users by default
if [[ -f /etc/passwd ]]; then
  # shellcheck disable=SC2046
  zstyle ':completion:*:*:*:users' ignored-patterns $(grep -E '/(nologin|false)$' /etc/passwd | cut -d: -f1 | sort)
else
  zstyle ':completion:*:*:*:users' ignored-patterns '_*'
fi

# Ignore "private" functions
zstyle ':completion:*:functions' ignored-patterns '_*' '.*'
zstyle ':completion:*:widgets' ignored-patterns '_*' '.*'

# TODO: check/review
zstyle ':completion:*:paths' ignore-parents 'parent pwd directory'
zstyle ':completion:*:paths' expand suffix
zstyle ':completion:*:paths' list-suffixes yes
zstyle ':completion:*:paths' path-completion no

# TODO: complete hosts from history, .ssh/config, .ssh/known_hosts, /etc/hosts and .local/share/zsh/comphosts
# zstyle -e ':completion:*' hosts ${KNOWN_HOSTS}

# man completion
zstyle ':completion:*' insert-sections yes
zstyle ':completion:*' separate-sections yes

# Needed for _gnu_generic to prevent descriptions from getting cropped.
# TODO: Might be fixed in a future version of zsh.
zstyle ':completion:*' command '- COLUMNS=999'