#!/usr/bin/env bash

tabs 4

# exit on errors
set -eo pipefail

INSTALLED_CBUILD_VERSION=2.0.1

if [ -z "$CBUILD_INSTALL_DIR" ]; then
    CBUILD_INSTALL_DIR="/usr/local/share/cbuild"
fi

function include {
    local script_path="$1"
    if [[ "$script_path" == cbuild/* ]]; then
        script_path="$CBUILD_INSTALL_DIR/$(echo $script_path | sed 's,^cbuild/,,')"
    fi
    # echp "including script $script_path"
    . "$script_path"
}

include "cbuild/myprint.sh"
include "cbuild/functions.sh"
include "cbuild/config.sh"

function print_help {
    myprint "cbuild v$INSTALLED_CBUILD_VERSION"
    myprint "C/C++ project build system written in bash."
    myprint "Usage: cbuild [OPTIONS] [TASK]"
    myprint "    -h, --help                     Show this message"
    myprint "    -v, --version                     Shows version"
    myprint "    -n, --new-project  [PROJ_DIR]  Initialize new cbuild project directory (default=./)"
    myprint "    -c, --current-config  FILE     Set current config file path (default=./current.config)"
    myprint "    -d, --default-config  FILE     Set default config file path (default=./current.config)"
}

current_config_path="./current.config"
default_config_path="./default.config"
args=($@)
args_count=${#args[@]}
selected_tasks_array=()
i=0
if [ $args_count -eq 0 ]; then
    print_help
fi

function get_next_arg {
    i=$((i+1))
    safeprint "${args[i]}"
}

while [ $i -lt $args_count ]
do
    case "${args[i]}" in
        '-h' | '--help')
            print_help
            ;;
        '-v' | '--version')
            myprint $INSTALLED_CBUILD_VERSION
            ;;
        '-c' | '--current-config')
            i=$((i+1))
            current_config_path="${args[i]}"
            myprint "<$current_config_path>"
            exit
            ;;
        '-d' | '--default-config')
            default_config_path="$(get_next_arg)"
            ;;
        '-n' | '--new-project')
            new_project_dir="$(get_next_arg)"
            if [ -z "$new_project_dir" ]; then
                new_project_dir="./"
            fi
            
            if ask_yn "create default.config?"; then
                cp "$CBUILD_INSTALL_DIR/default.config" "$new_project_dir"
                myprint "Enter project name: "
                read -r project_name
                sed -i "s,\%PROJECT_NAME\%,$project_name,g" "default.config"
            fi
            if ask_yn "Copy default .gitignore?"; then
                cp "$CBUILD_INSTALL_DIR/.gitignore" "$new_project_dir"
            fi
            ;;
        *)
            selected_tasks_array+=(${args[i]})
            ;;
    esac
    i=$((i+1))
done

function call_task {
    local current_config_path="$1"
    local default_config_path="$2"
    local task="$3"

    print_header "${CYAN}" "─" "$task"
    load_config "$current_config_path" "$default_config_path" "$task"
    resolve_dependencies "$DEPS_BASEDIR" "$DEPS"

    if [ ! -z "$PRE_TASK_SCRIPT" ]; then
        myprint "${BLUE}executing ${WHITE}$TASK_SCRIPT"
        include "$PRE_TASK_SCRIPT"
    fi

    myprint "${BLUE}executing ${WHITE}$TASK_SCRIPT"
    include "$TASK_SCRIPT"

    if [ ! -z "$POST_TASK_SCRIPT" ]; then
        myprint "${BLUE}executing ${WHITE}$POST_TASK_SCRIPT"
        include "$POST_TASK_SCRIPT"
    fi
}

function call_tasks {
    local tasks="$@"
    load_config "$current_config_path" "$default_config_path"
    print_header "${WHITE}" "═" "$PROJECT"
    for task in $tasks ; do
        call_task "$current_config_path" "$default_config_path" "$task"
    done
    print_hline "${WHITE}" "═"
}

selected_tasks_count=${#selected_tasks_array[@]}
if [ $selected_tasks_count -gt 0 ]; then
    time call_tasks "${selected_tasks_array[@]}" #2>&1 | tee cbuild.log
fi

if [ -f cbuild.log ]; then
    # remove terminal escape codes
    sed -e 's/[^[:blank:][:print:]]//g' \
        -e 's/\[0;[0-9][0-9]m//g' \
        -e 's/\[0;[0-9]m//g' \
        -e 's/\[[0-9][0-9]m//g' \
        -e 's/\[[0-9]m//g' \
        -e 's/  H  //g' \
        -e 's/\[3gH  //g' \
        -i cbuild.log
fi