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// Command spread is the self-hostable server. It always serves the public,
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// stateless demo (/, /api/analyze). When DATABASE_URL is set it also mounts the
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// Postgres-backed application: accounts, sessions, /login, /admin, /app.
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//
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// Excluded from the Vercel deploy (see .vercelignore); there the api/ function
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// serves the endpoint and the static files are served by Vercel's CDN.
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package main
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import (
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"context"
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"embed"
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"fmt"
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"log"
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"net/http"
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"os"
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"spread/internal/app"
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"spread/internal/spread"
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)
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//go:embed index.html app.js example-bom.csv assets
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var static embed.FS
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func main() {
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if len(os.Args) > 1 {
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switch os.Args[1] {
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case "init-admin":
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if err := runInitAdmin(os.Args[2:]); err != nil {
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log.Fatalf("init-admin: %v", err)
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}
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return
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case "create-customer":
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if err := runCreateCustomer(os.Args[2:]); err != nil {
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log.Fatalf("create-customer: %v", err)
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}
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return
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}
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}
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addr := ":" + envOr("PORT", "8137")
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mux := http.NewServeMux()
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mux.HandleFunc("/api/analyze", spread.Handler)
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if dsn := os.Getenv("DATABASE_URL"); dsn != "" {
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a, err := app.Open(context.Background(), app.Config{
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DSN: dsn,
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SecureCookie: os.Getenv("SPREAD_SECURE_COOKIES") == "1",
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BaseURL: envOr("SPREAD_BASE_URL", "http://localhost"+addr),
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Mailer: app.NewMailerFromEnv(),
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})
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switch {
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case err == nil:
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defer a.Close()
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a.Routes(mux)
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log.Printf("accounts enabled: /login, /admin, /app (Postgres)")
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case os.Getenv("SPREAD_DB_OPTIONAL") == "1":
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// Dev convenience: run the public demo even if Postgres is down.
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log.Printf("WARNING: database unavailable (%v) — serving public demo only", err)
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default:
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log.Fatalf("database: %v", err)
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}
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} else {
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log.Printf("no DATABASE_URL — serving public demo only")
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}
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mux.Handle("/", http.FileServer(http.FS(static)))
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log.Printf("spread listening on http://localhost%s", addr)
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log.Fatal(http.ListenAndServe(addr, mux))
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}
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// runInitAdmin creates or resets the first admin user under the internal
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// subscriber. Password is read from SPREAD_ADMIN_PASSWORD.
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func runInitAdmin(args []string) error {
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if len(args) < 1 {
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return fmt.Errorf("usage: DATABASE_URL=... SPREAD_ADMIN_PASSWORD=... spread init-admin <email>")
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}
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dsn := os.Getenv("DATABASE_URL")
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if dsn == "" {
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return fmt.Errorf("DATABASE_URL must be set")
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}
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pw := os.Getenv("SPREAD_ADMIN_PASSWORD")
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if pw == "" {
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return fmt.Errorf("SPREAD_ADMIN_PASSWORD must be set")
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}
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if err := app.OpenAndInitAdmin(context.Background(), dsn, args[0], pw); err != nil {
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return err
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}
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log.Printf("admin user %q ready under the internal subscriber", args[0])
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return nil
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}
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// runCreateCustomer creates a customer user under a (possibly new) subscriber.
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// Password is read from SPREAD_USER_PASSWORD.
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func runCreateCustomer(args []string) error {
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if len(args) < 1 {
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return fmt.Errorf("usage: DATABASE_URL=... SPREAD_USER_PASSWORD=... spread create-customer <email> [subscriber-name]")
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}
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dsn := os.Getenv("DATABASE_URL")
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if dsn == "" {
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return fmt.Errorf("DATABASE_URL must be set")
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}
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pw := os.Getenv("SPREAD_USER_PASSWORD")
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if pw == "" {
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return fmt.Errorf("SPREAD_USER_PASSWORD must be set")
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}
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email := args[0]
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subscriber := "Customer"
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if len(args) > 1 {
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subscriber = args[1]
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}
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if err := app.OpenAndCreateCustomer(context.Background(), dsn, email, subscriber, pw); err != nil {
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return err
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}
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log.Printf("customer %q ready under subscriber %q", email, subscriber)
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return nil
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}
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func envOr(key, def string) string {
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if v := os.Getenv(key); v != "" {
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return v
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}
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return def
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}
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