#!/usr/bin/env bash
set -e

help-table() {
    local -a rows
    local max_cmd=7 max_opt=6 max_desc=11

    rows+=("Command|Option|Description")
    rows+=("all||Run all tasks.")
    rows+=("build-11ty||Build the 11ty website.")
    rows+=("build-image|[output]|Build Docker image with buildx.")
    rows+=("commit-with-llm||Commit with llm generated commit message.")
    rows+=("dev-11ty||Run 11ty server.")
    rows+=("help|[grep]|Show help for commands.")
    rows+=("install||Install node packages.")
    rows+=("lint||Lint code with prettier.")
    rows+=("run||Run Docker image.")
    rows+=("run-tests||Test with shellcheck.")
    rows+=("serve-11ty||Serve the 11ty output folder.")
    rows+=("update-template||Update task.template from library.md.")
    rows+=("version||Show version of required tools.")

    for row in "${rows[@]}"; do
        IFS='|' read -r cmd opt desc <<< "$row"
        (( ${#cmd} > max_cmd )) && max_cmd=${#cmd}
        (( ${#opt} > max_opt )) && max_opt=${#opt}
        (( ${#desc} > max_desc )) && max_desc=${#desc}
    done

    printf '| %-*s | %-*s | %-*s |\n' \
        "$max_cmd" "Command" \
        "$max_opt" "Option" \
        "$max_desc" "Description"

    printf '|-%*s-|-%*s-|-%*s-|\n' \
        "$max_cmd" "$(printf '%*s' "$max_cmd" '' | tr ' ' '-')" \
        "$max_opt" "$(printf '%*s' "$max_opt" '' | tr ' ' '-')" \
        "$max_desc" "$(printf '%*s' "$max_desc" '' | tr ' ' '-')"

    for row in "${rows[@]:1}"; do
        IFS='|' read -r cmd opt desc <<< "$row"
        printf '| %-*s | %-*s | %-*s |\n' \
            "$max_cmd" "$cmd" \
            "$max_opt" "$opt" \
            "$max_desc" "$desc"
    done
}

help() {
    echo
    if [[ -n "$1" ]]; then
        help-table | grep -i "$1" | column -t -s'|'
    else
        echo "task <command> [options]"
        echo
        echo "commands:"
        echo
        help-table
    fi
    echo
}

clone-taskfile(){
    if [[ ! -d "$HOME/taskfile.build" ]]; then
        echo -e '\033[38;5;214mGit\033[0m: Clone taskfile repo'
        git clone https://git.taskfile.build "$HOME/taskfile.build"
    else
        echo -e '\033[38;5;214mGit\033[0m: Pull taskfile repo'
        git -C "$HOME/taskfile.build" pull
    fi
}

if [[ -d "$HOME/taskfile.build/bin" ]]; then
    for file in "$HOME/taskfile.build/bin/"*; do
        if [[ -f "$file" ]]; then
            source "$file"
        fi
    done
fi

# Static vars

BUILDX_PLATFORM="linux/amd64"
CONTAINER_REGISTRY="janikvonrotz"
CONTAINER_TAG="taskfile.build:latest"
DOCKERFILE="image/Dockerfile"

# Project commands

run() {
    echo "Open http://localhost:8080 in your browser"
    docker run -p 8080:80 \
        -e GIT_URL="https://git.taskfile.build" \
        -e TASK_COMMANDS="install,build-11ty" \
        -e CADDY_ROOT="_site" \
        janikvonrotz/taskfile.build:latest
}

install() {
    pnpm install
}

dev-11ty() {
    open-with-os 'http://localhost:8080/' & pnpm dlx @11ty/eleventy --serve
}

lint() {
    pnpm exec prettier . --write
}

run-tests() {
    echo "Test with shellcheck."
    shellcheck task
}

build-11ty() {
    pnpm dlx @11ty/eleventy
}

serve-11ty() {
    pnpx serve ./_site
}

version() {
    echo "eleventy: $(pnpm dlx @11ty/eleventy --version)"
}

update-template() {
    echo "Updating task.template from library.md"
    
    # Extract all rows from library.md that match the pattern rows+=("...")
    local -a new_rows
    while IFS= read -r line; do
        if [[ $line =~ rows\+=\(\"(.*)\"\) ]]; then
            new_rows+=("${BASH_REMATCH[1]}")
        fi
    done < library.md
    
    # Create a temporary file
    local temp_file=$(mktemp)
    
    # Read the task.template file and update the rows section
    local in_rows_section=false
    local found_header=false
    
    while IFS= read -r line || [[ -n "$line" ]]; do
        # Check if we're at the header row
        if [[ $line == *"rows+=(\"Command|Option|Description\")"* ]]; then
            echo "$line" >> "$temp_file"
            found_header=true
            in_rows_section=true
            # Add all the new rows after the header
            for row in "${new_rows[@]}"; do
                echo "    rows+=(\"$row\")" >> "$temp_file"
            done
            continue
        fi
        
        # Check if we're at the for-loop that ends the rows section
        if [[ $line == *"for row in \"\${rows[@]}\""* ]]; then
            in_rows_section=false
        fi
        
        # Skip existing rows between header and for-loop
        if $in_rows_section && $found_header; then
            if [[ $line =~ rows\+=\(\"(.*)\"\) ]]; then
                continue
            fi
        fi
        
        echo "$line" >> "$temp_file"
    done < task.template
    
    # Replace task.template with the updated content
    mv "$temp_file" task.template
    
    echo "task.template updated successfully"
}

if [[ "$1" == *","* ]]; then
    # Split comma-separated commands
    IFS=',' read -ra COMMANDS <<< "$1"
    for cmd in "${COMMANDS[@]}"; do
        # Trim whitespace
        cmd=$(echo "$cmd" | xargs)
        if declare -f "$cmd" > /dev/null; then
            "$cmd"
        else
            echo "Unknown command: $cmd"
            help
            exit 1
        fi
    done
elif declare -f "$1" > /dev/null; then
    "$1" "${@:2}"
else
    case "$1" in
        all)
            install
            build-11ty
            ;;
        *)
            echo "Unknown command: $1"
            help
            exit 1
            ;;
    esac
fi