package db

import (
	"reflect"
	"testing"
)

// Tests for the seed-helper functions absorbed from internal/knowledge
// (Phase 7).

func TestSeedStr(t *testing.T) {
	cases := []struct {
		name string
		m    map[string]any
		key  string
		want string
	}{
		{"missing key", map[string]any{}, "nope", ""},
		{"string value", map[string]any{"k": "v"}, "k", "v"},
		{"int value", map[string]any{"k": 42}, "k", ""},
		{"nil value", map[string]any{"k": nil}, "k", ""},
		{"empty string", map[string]any{"k": ""}, "k", ""},
	}
	for _, c := range cases {
		if got := seedStr(c.m, c.key); got != c.want {
			t.Errorf("%s: seedStr(%v, %q) = %q, want %q", c.name, c.m, c.key, got, c.want)
		}
	}
}

func TestSeedStrSlice(t *testing.T) {
	cases := []struct {
		name string
		m    map[string]any
		key  string
		want []string
	}{
		{"missing key", map[string]any{}, "tags", nil},
		{"string list", map[string]any{"tags": []any{"a", "b"}}, "tags", []string{"a", "b"}},
		{"mixed list drops non-strings", map[string]any{"tags": []any{"a", 1, "b"}}, "tags", []string{"a", "b"}},
		{"empty list", map[string]any{"tags": []any{}}, "tags", nil},
	}
	for _, c := range cases {
		if got := seedStrSlice(c.m, c.key); !reflect.DeepEqual(got, c.want) {
			t.Errorf("%s: seedStrSlice(%v, %q) = %v, want %v", c.name, c.m, c.key, got, c.want)
		}
	}
}

func TestToPGArray(t *testing.T) {
	cases := []struct {
		in   []string
		want string
	}{
		{nil, "{}"},
		{[]string{}, "{}"},
		{[]string{"ops"}, `{"ops"}`},
		{[]string{"ops", "network"}, `{"ops","network"}`},
	}
	for _, c := range cases {
		if got := toPGArray(c.in); got != c.want {
			t.Errorf("toPGArray(%v) = %q, want %q", c.in, got, c.want)
		}
	}
}