package main

import (
	"bytes"
	"context"

	"git.dev.alexdunmow.com/block/core/blocks"
)

// FooterBlockMeta defines metadata for the earthen footer block.
var FooterBlockMeta = blocks.BlockMeta{
	Key:         "footer",
	Title:       "Site Footer",
	Description: "Cream-on-moss footer with optional newsletter and column links",
	Source:      "earthen",
	Category:    blocks.CategoryNavigation,
}

// FooterBlock renders the earthen footer block.
// Content shape: {showNewsletter, tagline, columns:[{title,links:[{text,url}]}]}
func FooterBlock(ctx context.Context, content map[string]any) string {
	rawColumns := getSlice(content, "columns")
	columns := make([]FooterColumn, 0, len(rawColumns))
	for _, c := range rawColumns {
		rawLinks := getSlice(c, "links")
		links := make([]FooterLink, 0, len(rawLinks))
		for _, l := range rawLinks {
			links = append(links, FooterLink{
				Text: getString(l, "text"),
				URL:  getString(l, "url"),
			})
		}
		columns = append(columns, FooterColumn{
			Title: getString(c, "title"),
			Links: links,
		})
	}

	data := FooterData{
		ShowNewsletter: getBool(content, "showNewsletter", false),
		Tagline:        getString(content, "tagline"),
		Columns:        columns,
		Empty:          len(content) == 0,
	}

	var buf bytes.Buffer
	_ = footerComponent(data).Render(ctx, &buf)
	return buf.String()
}

// FooterData contains data for the footer component.
type FooterData struct {
	ShowNewsletter bool
	Tagline        string
	Columns        []FooterColumn
	Empty          bool
}

// FooterColumn is a single link column in the footer.
type FooterColumn struct {
	Title string
	Links []FooterLink
}

// FooterLink is a single link in a footer column.
type FooterLink struct {
	Text string
	URL  string
}