#!/usr/bin/env bash

set -eu
set -o pipefail

D3FLAMEGRAPH_REPO="https://raw.githubusercontent.com/spiermar/d3-flame-graph"
D3FLAMEGRAPH_VERSION="2.0.0-alpha4"
D3FLAMEGRAPH_JS="d3-flamegraph.js"
D3FLAMEGRAPH_CSS="d3-flamegraph.css"

D3FLAMEGRAPH_DIR=third_party/d3flamegraph

generate_d3flamegraph_go() {
    local d3_js=$(curl -s "${D3FLAMEGRAPH_REPO}/${D3FLAMEGRAPH_VERSION}/dist/${D3FLAMEGRAPH_JS}" | sed 's/`/`+"`"+`/g')
    local d3_css=$(curl -s "${D3FLAMEGRAPH_REPO}/${D3FLAMEGRAPH_VERSION}/dist/${D3FLAMEGRAPH_CSS}")

    cat <<-EOF > $D3FLAMEGRAPH_DIR/d3_flame_graph.go
// A D3.js plugin that produces flame graphs from hierarchical data.
// https://github.com/spiermar/d3-flame-graph
// Version $D3FLAMEGRAPH_VERSION
// See LICENSE file for license details

package d3flamegraph

// JSSource returns the $D3FLAMEGRAPH_JS file
const JSSource = \`
$d3_js
\`

// CSSSource returns the $D3FLAMEGRAPH_CSS file
const CSSSource = \`
$d3_css
\`
EOF
    gofmt -w $D3FLAMEGRAPH_DIR/d3_flame_graph.go
}

get_license() {
    curl -s -o $D3FLAMEGRAPH_DIR/LICENSE "${D3FLAMEGRAPH_REPO}/${D3FLAMEGRAPH_VERSION}/LICENSE"
}

mkdir -p $D3FLAMEGRAPH_DIR
get_license
generate_d3flamegraph_go