// Command build pre-renders the whole site into a directory.
//
// It reads content/ and writes dist/: every page as HTML, one file per stage
// fragment, the fragment manifest, the SQLite FTS5 index, the assets and the
// static files. No network call is made, and the output is what the server
// serves — Mode A never renders a page per request.
//
// Configuration is from the environment, so the same binary is used by
// `make build`, by CI and by the container image:
//
//	RESUME_ROOT     repository root (default ".")
//	RESUME_CONTENT  content directory (default $RESUME_ROOT/content)
//	RESUME_DIST     output directory (default $RESUME_ROOT/dist)
package main

import (
	"flag"
	"fmt"
	"os"

	"gitea.lab.audasmedia.com.au/sam/ai-resume/internal/site"
)

func main() {
	flag.Usage = func() {
		fmt.Fprintf(flag.CommandLine.Output(), "usage: build [--root DIR] [--content DIR] [--dist DIR]\n")
		fmt.Fprintf(flag.CommandLine.Output(), "environment: RESUME_ROOT, RESUME_CONTENT, RESUME_DIST\n")
	}
	root := flag.String("root", env("RESUME_ROOT", "."), "repository root")
	contentDir := flag.String("content", env("RESUME_CONTENT", ""), "content directory")
	distDir := flag.String("dist", env("RESUME_DIST", ""), "output directory")
	flag.Parse()

	cfg := site.Config{Root: *root, ContentDir: *contentDir, OutDir: *distDir}
	s, err := site.New(cfg)
	if err != nil {
		fmt.Fprintf(os.Stderr, "build: %v\n", err)
		os.Exit(1)
	}
	if err := s.Build(); err != nil {
		fmt.Fprintf(os.Stderr, "build: %v\n", err)
		os.Exit(1)
	}
	info, err := site.LoadBuildInfo(s.Config.OutDir)
	if err != nil {
		fmt.Fprintf(os.Stderr, "build: %v\n", err)
		os.Exit(1)
	}
	fmt.Printf("built %d pages, %d stage fragments, %d indexed documents into %s\n",
		info.Pages, info.Fragments, info.Indexed, s.Config.OutDir)
}

func env(key, fallback string) string {
	if v := os.Getenv(key); v != "" {
		return v
	}
	return fallback
}