command.diff

diff --git a/cli.go b/cli.go
new file mode 100644
index 0000000..b7ec8c9
--- /dev/null
+++ b/cli.go
@@ -0,0 +1,231 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"strconv"
+)
+
+type cmd struct {
+	help     string
+	callback func(args []string)
+}
+
+var commands = map[string]cmd{
+	"initdb": {
+		help: "initialize honk",
+		callback: func(args []string) {
+			initdb()
+		},
+	},
+	"upgrade": {
+		help: "upgrade honk",
+		callback: func(args []string) {
+			upgradedb()
+		},
+	},
+	"version": {
+		help: "print version",
+		callback: func(args []string) {
+			fmt.Println(softwareVersion)
+			os.Exit(0)
+		},
+	},
+	"admin": {
+		help: "admin interface",
+		callback: func(args []string) {
+			adminscreen()
+		},
+	},
+	"import": {
+		help: "import data into honk",
+		callback: func(args []string) {
+			if len(args) != 4 {
+				errx("import username honk|mastodon|twitter srcdir")
+			}
+			importMain(args[1], args[2], args[3])
+		},
+	},
+	"export": {
+		help: "export data from honk",
+		callback: func(args []string) {
+			if len(args) != 3 {
+				errx("export username destdir")
+			}
+			export(args[1], args[2])
+		},
+	},
+	"devel": {
+		help: "turn devel on/off",
+		callback: func(args []string) {
+			if len(args) != 2 {
+				errx("need an argument: devel (on|off)")
+			}
+			switch args[1] {
+			case "on":
+				setconfig("devel", 1)
+			case "off":
+				setconfig("devel", 0)
+			default:
+				errx("argument must be on or off")
+			}
+		},
+	},
+	"setconfig": {
+		help: "set honk config",
+		callback: func(args []string) {
+			if len(args) != 3 {
+				errx("need an argument: setconfig key val")
+			}
+			var val interface{}
+			var err error
+			if val, err = strconv.Atoi(args[2]); err != nil {
+				val = args[2]
+			}
+			setconfig(args[1], val)
+		},
+	},
+	"adduser": {
+		help: "add a user to honk",
+		callback: func(args []string) {
+			adduser()
+		},
+	},
+	"deluser": {
+		help: "delete a user from honk",
+		callback: func(args []string) {
+			if len(args) < 2 {
+				errx("usage: honk deluser username")
+			}
+			deluser(args[1])
+		},
+	},
+	"chpass": {
+		help: "change password of an account",
+		callback: func(args []string) {
+			if len(args) < 2 {
+				errx("usage: honk chpass username")
+			}
+			chpass(args[1])
+		},
+	},
+	"follow": {
+		help: "follow an account",
+		callback: func(args []string) {
+			if len(args) < 3 {
+				errx("usage: honk follow username url")
+			}
+			user, err := butwhatabout(args[1])
+			if err != nil {
+				errx("user %s not found", args[1])
+			}
+			var meta HonkerMeta
+			mj, _ := jsonify(&meta)
+			honkerid, flavor, err := savehonker(user, args[2], "", "presub", "", mj)
+			if err != nil {
+				errx("had some trouble with that: %s", err)
+			}
+			if flavor == "presub" {
+				followyou(user, honkerid, true)
+			}
+		},
+	},
+	"unfollow": {
+		help: "unfollow an account",
+		callback: func(args []string) {
+			if len(args) < 3 {
+				errx("usage: honk unfollow username url")
+			}
+			user, err := butwhatabout(args[1])
+			if err != nil {
+				errx("user not found")
+			}
+
+			honkerid, err := gethonker(user.ID, args[2])
+			if err != nil {
+				errx("sorry couldn't find them")
+			}
+			unfollowyou(user, honkerid, true)
+		},
+	},
+	"sendmsg": {
+		help: "send a message",
+		callback: func(args []string) {
+			if len(args) < 4 {
+				errx("usage: honk send username filename rcpt")
+			}
+			user, err := butwhatabout(args[1])
+			if err != nil {
+				errx("user %s not found", args[1])
+			}
+			data, err := os.ReadFile(args[2])
+			if err != nil {
+				errx("can't read file: %s", err)
+			}
+			deliverate(user.ID, args[3], data)
+		},
+	},
+	"cleanup": {
+		help: "clean up? (enter usefull )",
+		callback: func(args []string) {
+			arg := "30"
+			if len(args) > 1 {
+				arg = args[1]
+			}
+			cleanupdb(arg)
+		},
+	},
+	"unplug": {
+		help: "not sure",
+		callback: func(args []string) {
+			if len(args) < 2 {
+				errx("usage: honk unplug servername")
+			}
+			name := args[1]
+			unplugserver(name)
+		},
+	},
+	"backup": {
+		help: "backup honk",
+		callback: func(args []string) {
+			if len(args) < 2 {
+				errx("usage: honk backup dirname")
+			}
+			name := args[1]
+			svalbard(name)
+		},
+	},
+	"ping": {
+		help: "ping from user to user/url",
+		callback: func(args []string) {
+			if len(args) < 3 {
+				errx("usage: honk ping (from username) (to username or url)")
+			}
+			name := args[1]
+			targ := args[2]
+			user, err := butwhatabout(name)
+			if err != nil {
+				errx("unknown user %s", name)
+			}
+			ping(user, targ)
+		},
+	},
+	"run": {
+		help: "run honk",
+		callback: func(args []string) {
+			serve()
+		},
+	},
+	"backend": {
+		help: "run backend",
+		callback: func(args []string) {
+			backendServer()
+		},
+	},
+	"test": {
+		help: "run test",
+		callback: func(args []string) {
+			ElaborateUnitTests()
+		},
+	},
+}
diff --git a/database.go b/database.go
index 29a332e..ba97b94 100644
--- a/database.go
+++ b/database.go
@@ -102,6 +102,15 @@ func getserveruser() *WhatAbout {
 	return user
 }
 
+func gethonker(userid UserID, xid string) (int64, error) {
+	row := opendatabase().
+		QueryRow("select honkerid from honkers where xid = ? and userid = ? and flavor in ('sub')", xid, userid)
+	var honkerid int64
+
+	err := row.Scan(&honkerid)
+	return honkerid, err
+}
+
 func butwhatabout(name string) (*WhatAbout, error) {
 	user, ok := somenamedusers.Get(name)
 	if !ok {
diff --git a/main.go b/main.go
index d211e97..a83a209 100644
--- a/main.go
+++ b/main.go
@@ -24,7 +24,6 @@ import (
 	notrand "math/rand"
 	"os"
 	"runtime/pprof"
-	"strconv"
 	"time"
 
 	"humungus.tedunangst.com/r/webs/log"
@@ -86,6 +85,16 @@ var memprofilefd *os.File
 func main() {
 	flag.StringVar(&dataDir, "datadir", dataDir, "data directory")
 	flag.StringVar(&viewDir, "viewdir", viewDir, "view directory")
+	flag.Usage = func() {
+		flag.PrintDefaults()
+		helpText := "\n  available honk commands:\n"
+		for n, c := range commands {
+			helpText += fmt.Sprintf("    %s: %s\n", n, c.help)
+		}
+
+		fmt.Fprint(flag.CommandLine.Output(), helpText)
+	}
+
 	flag.Parse()
 	if *cpuprofile != "" {
 		f, err := os.Create(*cpuprofile)
@@ -118,12 +127,11 @@ func main() {
 	}
 	switch cmd {
 	case "init":
-		initdb()
+		commands["init"].callback(args)
 	case "upgrade":
-		upgradedb()
+		commands["upgrade"].callback(args)
 	case "version":
-		fmt.Println(softwareVersion)
-		os.Exit(0)
+		commands["version"].callback(args)
 	}
 	db := opendatabase()
 	dbversion := 0
@@ -153,134 +161,10 @@ func main() {
 
 	prepareStatements(db)
 
-	switch cmd {
-	case "admin":
-		adminscreen()
-	case "import":
-		if len(args) != 4 {
-			errx("import username honk|mastodon|twitter srcdir")
-		}
-		importMain(args[1], args[2], args[3])
-	case "export":
-		if len(args) != 3 {
-			errx("export username destdir")
-		}
-		export(args[1], args[2])
-	case "devel":
-		if len(args) != 2 {
-			errx("need an argument: devel (on|off)")
-		}
-		switch args[1] {
-		case "on":
-			setconfig("devel", 1)
-		case "off":
-			setconfig("devel", 0)
-		default:
-			errx("argument must be on or off")
-		}
-	case "setconfig":
-		if len(args) != 3 {
-			errx("need an argument: setconfig key val")
-		}
-		var val interface{}
-		var err error
-		if val, err = strconv.Atoi(args[2]); err != nil {
-			val = args[2]
-		}
-		setconfig(args[1], val)
-	case "adduser":
-		adduser()
-	case "deluser":
-		if len(args) < 2 {
-			errx("usage: honk deluser username")
-		}
-		deluser(args[1])
-	case "chpass":
-		if len(args) < 2 {
-			errx("usage: honk chpass username")
-		}
-		chpass(args[1])
-	case "follow":
-		if len(args) < 3 {
-			errx("usage: honk follow username url")
-		}
-		user, err := butwhatabout(args[1])
-		if err != nil {
-			errx("user %s not found", args[1])
-		}
-		var meta HonkerMeta
-		mj, _ := jsonify(&meta)
-		honkerid, flavor, err := savehonker(user, args[2], "", "presub", "", mj)
-		if err != nil {
-			errx("had some trouble with that: %s", err)
-		}
-		if flavor == "presub" {
-			followyou(user, honkerid, true)
-		}
-	case "unfollow":
-		if len(args) < 3 {
-			errx("usage: honk unfollow username url")
-		}
-		user, err := butwhatabout(args[1])
-		if err != nil {
-			errx("user not found")
-		}
-		row := db.QueryRow("select honkerid from honkers where xid = ? and userid = ? and flavor in ('sub')", args[2], user.ID)
-		var honkerid int64
-		err = row.Scan(&honkerid)
-		if err != nil {
-			errx("sorry couldn't find them")
-		}
-		unfollowyou(user, honkerid, true)
-	case "sendmsg":
-		if len(args) < 4 {
-			errx("usage: honk send username filename rcpt")
-		}
-		user, err := butwhatabout(args[1])
-		if err != nil {
-			errx("user %s not found", args[1])
-		}
-		data, err := os.ReadFile(args[2])
-		if err != nil {
-			errx("can't read file: %s", err)
-		}
-		deliverate(user.ID, args[3], data)
-	case "cleanup":
-		arg := "30"
-		if len(args) > 1 {
-			arg = args[1]
-		}
-		cleanupdb(arg)
-	case "unplug":
-		if len(args) < 2 {
-			errx("usage: honk unplug servername")
-		}
-		name := args[1]
-		unplugserver(name)
-	case "backup":
-		if len(args) < 2 {
-			errx("usage: honk backup dirname")
-		}
-		name := args[1]
-		svalbard(name)
-	case "ping":
-		if len(args) < 3 {
-			errx("usage: honk ping (from username) (to username or url)")
-		}
-		name := args[1]
-		targ := args[2]
-		user, err := butwhatabout(name)
-		if err != nil {
-			errx("unknown user %s", name)
-		}
-		ping(user, targ)
-	case "run":
-		serve()
-	case "backend":
-		backendServer()
-	case "test":
-		ElaborateUnitTests()
-	default:
-		errx("unknown command")
+	c, ok := commands[cmd]
+	if !ok {
+		errx("don't know about %q", cmd)
 	}
+
+	c.callback(args)
 }