package domain

import (
	"context"
	"strings"
	"testing"

	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
	"gitlab.com/unboundsoftware/eventsourced/eventsourced"

	"gitlab.com/unboundsoftware/schemas/hash"
)

// AddOrganization tests

func TestAddOrganization_Validate_Success(t *testing.T) {
	cmd := AddOrganization{
		Name:      "Test Org",
		Initiator: "user@example.com",
	}

	org := &Organization{} // New organization with no identity
	err := cmd.Validate(context.Background(), org)
	assert.NoError(t, err)
}

func TestAddOrganization_Validate_AlreadyExists(t *testing.T) {
	cmd := AddOrganization{
		Name:      "Test Org",
		Initiator: "user@example.com",
	}

	org := &Organization{
		BaseAggregate: eventsourced.BaseAggregateFromString("existing-org-id"),
	}

	err := cmd.Validate(context.Background(), org)
	require.Error(t, err)
	assert.Contains(t, err.Error(), "already exists")
}

func TestAddOrganization_Validate_EmptyName(t *testing.T) {
	cmd := AddOrganization{
		Name:      "",
		Initiator: "user@example.com",
	}

	org := &Organization{}
	err := cmd.Validate(context.Background(), org)
	require.Error(t, err)
	assert.Contains(t, err.Error(), "name is required")
}

func TestAddOrganization_Event(t *testing.T) {
	cmd := AddOrganization{
		Name:      "Test Org",
		Initiator: "user@example.com",
	}

	event := cmd.Event(context.Background())
	require.NotNil(t, event)

	orgEvent, ok := event.(*OrganizationAdded)
	require.True(t, ok)
	assert.Equal(t, "Test Org", orgEvent.Name)
	assert.Equal(t, "user@example.com", orgEvent.Initiator)
}

// AddAPIKey tests

func TestAddAPIKey_Event(t *testing.T) {
	type fields struct {
		Name      string
		Key       string
		Refs      []string
		Read      bool
		Publish   bool
		Initiator string
	}
	type args struct {
		in0 context.Context
	}
	tests := []struct {
		name   string
		fields fields
		args   args
	}{
		{
			name: "event",
			fields: fields{
				Name:      "test",
				Key:       "us_ak_1234567890123456",
				Refs:      []string{"Example@dev"},
				Read:      true,
				Publish:   true,
				Initiator: "jim@example.org",
			},
			args: args{},
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			a := AddAPIKey{
				Name:      tt.fields.Name,
				Key:       tt.fields.Key,
				Refs:      tt.fields.Refs,
				Read:      tt.fields.Read,
				Publish:   tt.fields.Publish,
				Initiator: tt.fields.Initiator,
			}
			event := a.Event(tt.args.in0)
			require.NotNil(t, event)

			// Cast to APIKeyAdded to verify fields
			apiKeyEvent, ok := event.(*APIKeyAdded)
			require.True(t, ok, "Event should be *APIKeyAdded")

			// Verify non-key fields match exactly
			assert.Equal(t, tt.fields.Name, apiKeyEvent.Name)
			assert.Equal(t, tt.fields.Refs, apiKeyEvent.Refs)
			assert.Equal(t, tt.fields.Read, apiKeyEvent.Read)
			assert.Equal(t, tt.fields.Publish, apiKeyEvent.Publish)
			assert.Equal(t, tt.fields.Initiator, apiKeyEvent.Initiator)

			// Verify the key is hashed correctly (bcrypt format)
			assert.True(t, strings.HasPrefix(apiKeyEvent.Key, "$2"), "Key should be bcrypt hashed")
			assert.NotEqual(t, tt.fields.Key, apiKeyEvent.Key, "Key should be hashed, not plaintext")

			// Verify the hash matches the original key
			assert.True(t, hash.CompareAPIKey(apiKeyEvent.Key, tt.fields.Key), "Hashed key should match original")
		})
	}
}

func TestAddAPIKey_Validate_Success(t *testing.T) {
	cmd := AddAPIKey{
		Name:      "production-key",
		Key:       "us_ak_1234567890123456",
		Refs:      []string{"main"},
		Read:      true,
		Publish:   false,
		Initiator: "user@example.com",
	}

	org := &Organization{
		BaseAggregate: eventsourced.BaseAggregateFromString("org-123"),
		APIKeys:       []APIKey{},
	}

	err := cmd.Validate(context.Background(), org)
	assert.NoError(t, err)
}

func TestAddAPIKey_Validate_OrganizationNotExists(t *testing.T) {
	cmd := AddAPIKey{
		Name:      "production-key",
		Key:       "us_ak_1234567890123456",
		Refs:      []string{"main"},
		Read:      true,
		Publish:   false,
		Initiator: "user@example.com",
	}

	org := &Organization{} // No identity means it doesn't exist
	err := cmd.Validate(context.Background(), org)
	require.Error(t, err)
	assert.Contains(t, err.Error(), "does not exist")
}

func TestAddAPIKey_Validate_DuplicateKeyName(t *testing.T) {
	cmd := AddAPIKey{
		Name:      "existing-key",
		Key:       "us_ak_1234567890123456",
		Refs:      []string{"main"},
		Read:      true,
		Publish:   false,
		Initiator: "user@example.com",
	}

	org := &Organization{
		BaseAggregate: eventsourced.BaseAggregateFromString("org-123"),
		APIKeys: []APIKey{
			{
				Name: "existing-key",
				Key:  "hashed-key",
			},
		},
	}

	err := cmd.Validate(context.Background(), org)
	require.Error(t, err)
	assert.Contains(t, err.Error(), "already exist")
	assert.Contains(t, err.Error(), "existing-key")
}

// UpdateSubGraph tests

func TestUpdateSubGraph_Validate_Success(t *testing.T) {
	url := "http://example.com/graphql"
	cmd := UpdateSubGraph{
		OrganizationId: "org-123",
		Ref:            "main",
		Service:        "users",
		Url:            &url,
		Sdl:            "type Query { hello: String }",
		Initiator:      "user@example.com",
	}

	subGraph := &SubGraph{
		BaseAggregate: eventsourced.BaseAggregateFromString("subgraph-123"),
	}

	err := cmd.Validate(context.Background(), subGraph)
	assert.NoError(t, err)
}

func TestUpdateSubGraph_Validate_MissingRef(t *testing.T) {
	url := "http://example.com/graphql"
	cmd := UpdateSubGraph{
		OrganizationId: "org-123",
		Ref:            "",
		Service:        "users",
		Url:            &url,
		Sdl:            "type Query { hello: String }",
		Initiator:      "user@example.com",
	}

	subGraph := &SubGraph{
		BaseAggregate: eventsourced.BaseAggregateFromString("subgraph-123"),
	}

	err := cmd.Validate(context.Background(), subGraph)
	require.Error(t, err)
	assert.Contains(t, err.Error(), "ref is missing")
}

func TestUpdateSubGraph_Validate_RefWhitespaceOnly(t *testing.T) {
	url := "http://example.com/graphql"
	cmd := UpdateSubGraph{
		OrganizationId: "org-123",
		Ref:            "   ",
		Service:        "users",
		Url:            &url,
		Sdl:            "type Query { hello: String }",
		Initiator:      "user@example.com",
	}

	subGraph := &SubGraph{
		BaseAggregate: eventsourced.BaseAggregateFromString("subgraph-123"),
	}

	err := cmd.Validate(context.Background(), subGraph)
	require.Error(t, err)
	assert.Contains(t, err.Error(), "ref is missing")
}

func TestUpdateSubGraph_Validate_MissingService(t *testing.T) {
	url := "http://example.com/graphql"
	cmd := UpdateSubGraph{
		OrganizationId: "org-123",
		Ref:            "main",
		Service:        "",
		Url:            &url,
		Sdl:            "type Query { hello: String }",
		Initiator:      "user@example.com",
	}

	subGraph := &SubGraph{
		BaseAggregate: eventsourced.BaseAggregateFromString("subgraph-123"),
	}

	err := cmd.Validate(context.Background(), subGraph)
	require.Error(t, err)
	assert.Contains(t, err.Error(), "service is missing")
}

func TestUpdateSubGraph_Validate_ServiceWhitespaceOnly(t *testing.T) {
	url := "http://example.com/graphql"
	cmd := UpdateSubGraph{
		OrganizationId: "org-123",
		Ref:            "main",
		Service:        "   ",
		Url:            &url,
		Sdl:            "type Query { hello: String }",
		Initiator:      "user@example.com",
	}

	subGraph := &SubGraph{
		BaseAggregate: eventsourced.BaseAggregateFromString("subgraph-123"),
	}

	err := cmd.Validate(context.Background(), subGraph)
	require.Error(t, err)
	assert.Contains(t, err.Error(), "service is missing")
}

func TestUpdateSubGraph_Validate_MissingSDL(t *testing.T) {
	url := "http://example.com/graphql"
	cmd := UpdateSubGraph{
		OrganizationId: "org-123",
		Ref:            "main",
		Service:        "users",
		Url:            &url,
		Sdl:            "",
		Initiator:      "user@example.com",
	}

	subGraph := &SubGraph{
		BaseAggregate: eventsourced.BaseAggregateFromString("subgraph-123"),
	}

	err := cmd.Validate(context.Background(), subGraph)
	require.Error(t, err)
	assert.Contains(t, err.Error(), "SDL is missing")
}

func TestUpdateSubGraph_Validate_SDLWhitespaceOnly(t *testing.T) {
	url := "http://example.com/graphql"
	cmd := UpdateSubGraph{
		OrganizationId: "org-123",
		Ref:            "main",
		Service:        "users",
		Url:            &url,
		Sdl:            "   \n\t  ",
		Initiator:      "user@example.com",
	}

	subGraph := &SubGraph{
		BaseAggregate: eventsourced.BaseAggregateFromString("subgraph-123"),
	}

	err := cmd.Validate(context.Background(), subGraph)
	require.Error(t, err)
	assert.Contains(t, err.Error(), "SDL is missing")
}

func TestUpdateSubGraph_Validate_MissingURL_NoExistingURL(t *testing.T) {
	cmd := UpdateSubGraph{
		OrganizationId: "org-123",
		Ref:            "main",
		Service:        "users",
		Url:            nil,
		Sdl:            "type Query { hello: String }",
		Initiator:      "user@example.com",
	}

	subGraph := &SubGraph{
		BaseAggregate: eventsourced.BaseAggregateFromString("subgraph-123"),
		Url:           nil, // No existing URL
	}

	err := cmd.Validate(context.Background(), subGraph)
	require.Error(t, err)
	assert.Contains(t, err.Error(), "url is missing")
}

func TestUpdateSubGraph_Validate_MissingURL_HasExistingURL(t *testing.T) {
	existingURL := "http://example.com/graphql"
	cmd := UpdateSubGraph{
		OrganizationId: "org-123",
		Ref:            "main",
		Service:        "users",
		Url:            nil,
		Sdl:            "type Query { hello: String }",
		Initiator:      "user@example.com",
	}

	subGraph := &SubGraph{
		BaseAggregate: eventsourced.BaseAggregateFromString("subgraph-123"),
		Url:           &existingURL, // Has existing URL, so nil is OK
	}

	err := cmd.Validate(context.Background(), subGraph)
	assert.NoError(t, err)
}

func TestUpdateSubGraph_Validate_EmptyURL_NoExistingURL(t *testing.T) {
	emptyURL := ""
	cmd := UpdateSubGraph{
		OrganizationId: "org-123",
		Ref:            "main",
		Service:        "users",
		Url:            &emptyURL,
		Sdl:            "type Query { hello: String }",
		Initiator:      "user@example.com",
	}

	subGraph := &SubGraph{
		BaseAggregate: eventsourced.BaseAggregateFromString("subgraph-123"),
		Url:           nil,
	}

	err := cmd.Validate(context.Background(), subGraph)
	require.Error(t, err)
	assert.Contains(t, err.Error(), "url is missing")
}

func TestUpdateSubGraph_Validate_URLWhitespaceOnly_NoExistingURL(t *testing.T) {
	whitespaceURL := "   "
	cmd := UpdateSubGraph{
		OrganizationId: "org-123",
		Ref:            "main",
		Service:        "users",
		Url:            &whitespaceURL,
		Sdl:            "type Query { hello: String }",
		Initiator:      "user@example.com",
	}

	subGraph := &SubGraph{
		BaseAggregate: eventsourced.BaseAggregateFromString("subgraph-123"),
		Url:           nil,
	}

	err := cmd.Validate(context.Background(), subGraph)
	require.Error(t, err)
	assert.Contains(t, err.Error(), "url is missing")
}

func TestUpdateSubGraph_Validate_WrongAggregateType(t *testing.T) {
	url := "http://example.com/graphql"
	cmd := UpdateSubGraph{
		OrganizationId: "org-123",
		Ref:            "main",
		Service:        "users",
		Url:            &url,
		Sdl:            "type Query { hello: String }",
		Initiator:      "user@example.com",
	}

	// Pass wrong aggregate type
	org := &Organization{
		BaseAggregate: eventsourced.BaseAggregateFromString("org-123"),
	}

	err := cmd.Validate(context.Background(), org)
	require.Error(t, err)
	assert.Contains(t, err.Error(), "not a SubGraph")
}

func TestUpdateSubGraph_Event(t *testing.T) {
	url := "http://example.com/graphql"
	wsURL := "ws://example.com/graphql"
	cmd := UpdateSubGraph{
		OrganizationId: "org-123",
		Ref:            "main",
		Service:        "users",
		Url:            &url,
		WSUrl:          &wsURL,
		Sdl:            "type Query { hello: String }",
		Initiator:      "user@example.com",
	}

	event := cmd.Event(context.Background())
	require.NotNil(t, event)

	subGraphEvent, ok := event.(*SubGraphUpdated)
	require.True(t, ok)
	assert.Equal(t, "org-123", subGraphEvent.OrganizationId)
	assert.Equal(t, "main", subGraphEvent.Ref)
	assert.Equal(t, "users", subGraphEvent.Service)
	assert.Equal(t, url, *subGraphEvent.Url)
	assert.Equal(t, wsURL, *subGraphEvent.WSUrl)
	assert.Equal(t, "type Query { hello: String }", subGraphEvent.Sdl)
	assert.Equal(t, "user@example.com", subGraphEvent.Initiator)
}