# ~/.zshrc


# =============================================================================
# HELPER FUNCTIONS
# =============================================================================

# Add a directory to PATH with existence check
# Usage: add_to_path /path/to/add [prepend|append]
add_to_path() {
  local dir="$1"
  local position="${2:-prepend}"

  if [[ -d "$dir" ]]; then
    case "$position" in
      prepend)
        export PATH="$dir:$PATH"
        ;;
      append)
        export PATH="$PATH:$dir"
        ;;
      *)
        echo "Warning: Unknown position '$position' for path '$dir'" >&2
        return 1
        ;;
    esac
  fi
}

# Source a file with existence and readability check (zsh-friendly)
# Usage: source_file /path/to/file
source_file() {
  local file="$1"

  if [[ -f "$file" && -r "$file" ]]; then
    source "$file"
  fi
}

# Eval the output of a command, silently skipping if it fails or produces nothing
# Usage: eval_expr 'pyenv init -'
eval_expr() {
  local cmd="$1"
  local output

  if output="$(eval "$cmd" 2>/dev/null)" && [[ -n "$output" ]]; then
    eval "$output"
  fi
}


# =============================================================================
# PATH EXTENSIONS
# =============================================================================

# Define all path extensions in an array for easy management
path_extensions=(
  "$HOME/bin"
  "$HOME/.local/bin"
  "$HOME/.rbenv/bin"
  "$HOME/.pyenv/bin"
  "$HOME/.cargo/bin"
  "$HOME/go/bin"
  "$HOME/scripts"
)

# Apply add_to_path to each directory (prepend by default)
for path_dir in "${path_extensions[@]}"; do
  add_to_path "$path_dir" prepend
done


# =============================================================================
# CONFIGURATION FILES TO SOURCE
# =============================================================================

# Define files to source in an array for easy management
source_files=(
  "$HOME/.env"
  "$HOME/.nvm/nvm.sh"
  "$HOME/.cargo/env"
  "${XDG_CACHE_HOME:-$HOME/.cache}/p10k-instant-prompt-${(%):-%n}.zsh"
)

# Source zsh-compatible files (skip if missing, no warnings)
for config_file in "${source_files[@]}"; do
  source_file "$config_file"
done


# =============================================================================
# EVAL EXPRESSIONS
# =============================================================================

# Commands whose output should be eval'd (tool initializers, etc.)
eval_expressions=(
  'pyenv init -'
)

for expr in "${eval_expressions[@]}"; do
  eval_expr "$expr"
done


# =============================================================================
# SHELL INITIALIZATION
# =============================================================================

# Oh My Zsh installation
export ZSH="$HOME/.oh-my-zsh"

# Set theme
ZSH_THEME="powerlevel10k/powerlevel10k"

# Enable plugins
plugins=(
  git gh sudo ssh ruby rust python node rsync nvm rbenv pyenv
  docker docker-compose zsh-autosuggestions zsh-syntax-highlighting
  zsh-interactive-cd zsh-navigation-tools
)

# Add fpath custom completions
[[ -d "$HOME/.zsh/completions" ]] && fpath=("$HOME/.zsh/completions" $fpath)

# Load Oh My Zsh framework
[[ -f "$ZSH/oh-my-zsh.sh" ]] && source "$ZSH/oh-my-zsh.sh"

# Powerlevel10k configuration (must come after theme is set)
[[ -f ~/.p10k.zsh ]] && source ~/.p10k.zsh


# =============================================================================
# SHELL OPTIONS
# =============================================================================

zsh_options=(
  appendhistory
  incappendhistory
  sharehistory
  histignoreall_dups
  histreduceblanks
  complete_in_word
  always_to_end
  prompt_percent
  prompt_subst
  auto_cd
)

for opt in "${zsh_options[@]}"; do
  setopt "$opt"
done


# =============================================================================
# ALIASES AND FUNCTIONS
# =============================================================================

# Please add your custom aliases and functions here or in:
# - $ZSH_CUSTOM/aliases.zsh
# - $ZSH_CUSTOM/functions.zsh

alias arty="arty.sh"
alias stacks="stacks.sh"