Initial import.

.gitignore

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+kls.conf

go.mod

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+module git.wntrmute.dev/kyle/kls
+
+go 1.17

links/alphabet.go

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+package links
+
+import (
+	"crypto/rand"
+	"math/big"
+)
+
+const codeLength = 5
+
+var (
+	alphabet       = "ABCDEFGHJKMNPQRSTUVWXYZ23456789"
+	alphabetLength = big.NewInt(int64(len(alphabet)))
+)
+
+func randInt() int {
+	p, err := rand.Int(rand.Reader, alphabetLength)
+	if err != nil {
+		panic(err.Error())
+	}
+
+	return int(p.Int64())
+}
+
+func GenCode() string {
+	var code []byte
+	for i := 0; i < codeLength; i++ {
+		code = append(code, alphabet[randInt()])
+	}
+	return string(code)
+}

schema.sql

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+CREATE TABLE urls (
+        id              UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+	url		TEXT NOT NULL,
+	nurl		TEXT NOT NULL, -- normalized url
+	short		TEXT NOT NULL UNIQUE,
+	created_at	TIMESTAMPTZ NOT NULL DEFAULT
+);