package inflation

import (
	"bytes"
	"fmt"
	"io"
	"regexp"

	log "git.tijl.dev/tijl/tijl.dev-core/modules/logger"
	"github.com/go-echarts/go-echarts/v2/render"
	tpls "github.com/go-echarts/go-echarts/v2/templates"
)

type InternalRenderer struct {
	render.BaseRender
	c      interface{}
	before []func()
}

func NewRenderer(c interface{}, before ...func()) render.Renderer {
	return &InternalRenderer{c: c, before: before}
}

func CustomRender(r *InternalRenderer) (string, error) {
	for _, fn := range r.before {
		fn()
	}

	contents := []string{tpls.BaseTpl, tpls.ChartTpl}
	tpl := render.MustTemplate("chart", contents)

	var buf bytes.Buffer
	if err := tpl.ExecuteTemplate(&buf, "chart", r.c); err != nil {
		return "", err
	}

	log.Debug().Interface("bufst", buf.String()).Msg("t")
	return buf.String(), nil
}

func (r *InternalRenderer) Render(w io.Writer) error {
	return nil
}

var scriptRegex = regexp.MustCompile(`<script[^>]*>([\s\S]*?)<\/script>`)

func handleScriptElement(scriptTag string) string {
	matches := scriptRegex.FindStringSubmatch(scriptTag)
	if len(matches) > 1 {
		return matches[1]
	}

	return fmt.Sprintf(`window.onload = function() {%v}`, scriptTag)
}