package main

import (
	"bytes"
	"context"
	"fmt"
	"strings"

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

// ManpageHeaderBlockMeta defines metadata for the man-page header block.
var ManpageHeaderBlockMeta = blocks.BlockMeta{
	Key:         "manpage_header",
	Title:       "Man-page Header",
	Description: "NAME(section) ... center ... version row, like a man-page top line",
	Source:      "terminal",
	Category:    blocks.CategoryLayout,
}

// ManpageHeaderData is the parsed content for the manpage_header block.
type ManpageHeaderData struct {
	Name    string
	Section int
	Version string
	// Banner is the rendered top-line text: "NAME(1) ... version".
	Banner string
}

// ManpageHeaderBlock renders the man-page top row.
// Content shape: {name, section, version}.
func ManpageHeaderBlock(ctx context.Context, content map[string]any) string {
	data := ManpageHeaderData{
		Name:    strings.ToUpper(getStringDefault(content, "name", "PAGE")),
		Section: getInt(content, "section", 1),
		Version: getStringDefault(content, "version", "terminal v0.1.0"),
	}
	if data.Section < 1 {
		data.Section = 1
	}
	data.Banner = fmt.Sprintf("%s(%d) %s %s", data.Name, data.Section, "—", data.Version)

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