package diff

import (
	"testing"

	"git.warky.dev/wdevs/relspecgo/pkg/models"
)

func TestCompareSchemaDetails_DescriptionAndOwner(t *testing.T) {
	mk := func(desc, owner string) *models.Schema {
		s := models.InitSchema("public")
		s.Description, s.Owner = desc, owner
		return s
	}
	tests := []struct {
		name       string
		src, tgt   *models.Schema
		wantFields []string
	}{
		{"identical", mk("d", "o"), mk("d", "o"), nil},
		{"description", mk("a", "o"), mk("b", "o"), []string{"description"}},
		{"owner", mk("d", "x"), mk("d", "y"), []string{"owner"}},
		{"both", mk("a", "x"), mk("b", "y"), []string{"description", "owner"}},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			got := compareSchemaDetails(tt.src, tt.tgt)
			if len(tt.wantFields) == 0 {
				if got != nil {
					t.Fatalf("expected no change, got %+v", got)
				}
				return
			}
			if got == nil || len(got.Changes) != len(tt.wantFields) {
				t.Fatalf("changes: %+v", got)
			}
			for _, f := range tt.wantFields {
				c, ok := got.Changes[f].(map[string]any)
				if !ok {
					t.Fatalf("missing %s: %+v", f, got.Changes)
				}
				if c["source"] == c["target"] {
					t.Errorf("%s source and target equal: %v", f, c)
				}
			}
		})
	}
}

func TestCompareDatabases_SchemaAttrsCounted(t *testing.T) {
	src, tgt := models.InitDatabase("a"), models.InitDatabase("b")
	s1, s2 := models.InitSchema("public"), models.InitSchema("public")
	s1.Owner, s2.Owner = "alice", "bob"
	src.Schemas, tgt.Schemas = append(src.Schemas, s1), append(tgt.Schemas, s2)

	res := CompareDatabases(src, tgt)
	if res.Schemas == nil || len(res.Schemas.Modified) != 1 {
		t.Fatalf("schema owner change not reported: %+v", res.Schemas)
	}
	if ComputeSummary(res).Schemas.Modified != 1 {
		t.Error("summary must count the modified schema")
	}
}