package cli

import (
	"fmt"
	"strings"
	"testing"
)

func TestKVListCommand(t *testing.T) {
	c, _ := setupTestCommand(t)
	ctx := t.Context()

	seed := map[string]any{
		"counter": 42,
		"message": "hello world",
		"a/b":     "slash value",
	}
	for key, value := range seed {
		if err := c.db.KVSet(ctx, key, value); err != nil {
			t.Fatalf("seeding %q: %v", key, err)
		}
	}

	out, err := executeCommand(c.rootCmd(), "kv", "list")
	if err != nil {
		t.Fatalf("kv list: %v", err)
	}

	for wantKey, wantValue := range seed {
		if !strings.Contains(out, wantKey) {
			t.Errorf("kv list output missing %q; got:\n%s", wantKey, out)
		}
		if !strings.Contains(out, fmt.Sprint(wantValue)) {
			t.Errorf("kv list output missing %q; got:\n%s", wantValue, out)
		}
	}
}

func TestKVGetCommand(t *testing.T) {
	c, _ := setupTestCommand(t)
	ctx := t.Context()

	if err := c.db.KVSet(ctx, "counter", 42); err != nil {
		t.Fatal(err)
	}
	if err := c.db.KVSet(ctx, "a/b", "slash value"); err != nil {
		t.Fatal(err)
	}

	// Plain key.
	out, err := executeCommand(c.rootCmd(), "kv", "get", "counter")
	if err != nil {
		t.Fatalf("kv get counter: %v", err)
	}
	if got := strings.TrimSpace(out); got != "42" {
		t.Errorf("kv get counter = %q, want %q", got, "42")
	}

	// Key containing a slash.
	out, err = executeCommand(c.rootCmd(), "kv", "get", "a/b")
	if err != nil {
		t.Fatalf("kv get a/b: %v", err)
	}
	if got := strings.TrimSpace(out); got != "slash value" {
		t.Errorf("kv get a/b = %q, want %q", got, "slash value")
	}

	// Missing key should error.
	if _, err := executeCommand(c.rootCmd(), "kv", "get", "missing"); err == nil {
		t.Error("kv get missing: expected error, got nil")
	}
}

func TestKVPopCommand(t *testing.T) {
	c, _ := setupTestCommand(t)
	ctx := t.Context()

	if err := c.db.KVSet(ctx, "counter", 42); err != nil {
		t.Fatal(err)
	}
	if err := c.db.KVSet(ctx, "a/b", "slash value"); err != nil {
		t.Fatal(err)
	}

	// Pop a plain key and confirm it returns the value and is deleted.
	out, err := executeCommand(c.rootCmd(), "kv", "pop", "counter")
	if err != nil {
		t.Fatalf("kv pop counter: %v", err)
	}
	if got := strings.TrimSpace(out); got != "42" {
		t.Errorf("kv pop counter = %q, want %q", got, "42")
	}
	if _, err := c.db.KVGet(ctx, "counter"); err == nil {
		t.Error("counter still present after kv pop")
	}

	// Pop a key containing a slash.
	out, err = executeCommand(c.rootCmd(), "kv", "pop", "a/b")
	if err != nil {
		t.Fatalf("kv pop a/b: %v", err)
	}
	if got := strings.TrimSpace(out); got != "slash value" {
		t.Errorf("kv pop a/b = %q, want %q", got, "slash value")
	}
	if _, err := c.db.KVGet(ctx, "a/b"); err == nil {
		t.Error("a/b still present after kv pop")
	}

	// Popping a missing key should error.
	if _, err := executeCommand(c.rootCmd(), "kv", "pop", "missing"); err == nil {
		t.Error("kv pop missing: expected error, got nil")
	}
}