#!/usr/bin/env bash

CURRENT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

SUPPORTED_TMUX_VERSION="1.9"

# Ensures TMUX_PLUGIN_MANAGER_PATH global env variable is set.
# Default tpm path is "$HOME/.tmux/plugins/". That's where all the plugins are
# downloaded.
#
# Put this in `.tmux.conf` to override the default:
# `set-environment -g TMUX_PLUGIN_MANAGER_PATH "/some/other/path/"`
set_tpm_path() {
	$CURRENT_DIR/scripts/set_tpm_path.sh >/dev/null 2>&1
}

# 1. Fetches plugin names from `@tpm_plugins` user variable.
# 2. Creates full plugin path
# 3. Sources all *.tmux files from each of the plugin directories
#	 - no errors raised if directory does not exist
# Files are sourced as tmux config files, not as shell scripts!
source_plugins() {
	$CURRENT_DIR/scripts/source_plugins.sh >/dev/null 2>&1
}

# Defines key binding:
# prefix + I - downloads TPM plugins and reloads TMUX environment.
set_tpm_key_binding() {
	tmux bind-key I run-shell "$CURRENT_DIR/scripts/install_plugins.sh >/dev/null 2>&1"
	tmux bind-key U run-shell "$CURRENT_DIR/scripts/update_plugin_prompt.sh"
}

supported_tmux_version_ok() {
	$CURRENT_DIR/scripts/check_tmux_version.sh "$SUPPORTED_TMUX_VERSION"
}

main() {
	if supported_tmux_version_ok; then
		set_tpm_path
		set_tpm_key_binding
		source_plugins
	fi
}
main