package main

import (
	"bytes"
	"context"

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

// ColophonBlockMeta describes the Editorial colophon (footer) block: optional
// subscribe stub, optional ISSN field, and a list of inline footer links.
// Registered as "editorial:colophon" at runtime.
var ColophonBlockMeta = blocks.BlockMeta{
	Key:         "colophon",
	Title:       "Colophon",
	Description: "Editorial footer with ISSN, subscribe stub, and link list",
	Source:      "editorial",
	Category:    blocks.CategoryNavigation,
}

// ColophonLink is one row in the colophon link list.
type ColophonLink struct {
	Text string
	URL  string
}

// ColophonData carries parsed colophon content.
type ColophonData struct {
	ShowSignup bool
	ISSN       string
	Links      []ColophonLink
}

// ColophonBlock renders the colophon.
//
// Content shape:
//
//	{
//	  "showSignup": "true",
//	  "issn":       "0000-0000",
//	  "links": [
//	    { "text": "About", "url": "/about" },
//	    { "text": "Style Guide", "url": "/style-guide" }
//	  ]
//	}
func ColophonBlock(ctx context.Context, content map[string]any) string {
	rawLinks := getSlice(content, "links")
	links := make([]ColophonLink, 0, len(rawLinks))
	for _, l := range rawLinks {
		links = append(links, ColophonLink{
			Text: getString(l, "text"),
			URL:  getString(l, "url"),
		})
	}

	data := ColophonData{
		ShowSignup: getBool(content, "showSignup", false),
		ISSN:       getString(content, "issn"),
		Links:      links,
	}

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