package model_test

import (
	"encoding/json"
	"testing"

	"github.com/stretchr/testify/assert"

	"github.com/gochat/gochat/internal/model"
)

// --- TableName Method Tests ---

func TestAccountTableName(t *testing.T) {
	assert.Equal(t, "accounts", model.Account{}.TableName())
}

func TestUserTableName(t *testing.T) {
	assert.Equal(t, "users", model.User{}.TableName())
}

func TestInboxTableName(t *testing.T) {
	assert.Equal(t, "inboxes", model.Inbox{}.TableName())
}

func TestConversationTableName(t *testing.T) {
	assert.Equal(t, "conversations", model.Conversation{}.TableName())
}

func TestMessageTableName(t *testing.T) {
	assert.Equal(t, "messages", model.Message{}.TableName())
}

func TestContactTableName(t *testing.T) {
	assert.Equal(t, "contacts", model.Contact{}.TableName())
}

func TestAccountUserTableName(t *testing.T) {
	assert.Equal(t, "account_users", model.AccountUser{}.TableName())
}

func TestInboxMemberTableName(t *testing.T) {
	assert.Equal(t, "inbox_members", model.InboxMember{}.TableName())
}

func TestCustomRoleTableName(t *testing.T) {
	assert.Equal(t, "custom_roles", model.CustomRole{}.TableName())
}

func TestAttachmentTableName(t *testing.T) {
	assert.Equal(t, "attachments", model.Attachment{}.TableName())
}

func TestNotificationTableName(t *testing.T) {
	assert.Equal(t, "notifications", model.Notification{}.TableName())
}

func TestNotificationPreferenceTableName(t *testing.T) {
	assert.Equal(t, "notification_preferences", model.NotificationPreference{}.TableName())
}

func TestPlatformAppTableName(t *testing.T) {
	assert.Equal(t, "platform_apps", model.PlatformApp{}.TableName())
}

func TestContactInboxTableName(t *testing.T) {
	assert.Equal(t, "contact_inboxes", model.ContactInbox{}.TableName())
}

// --- AccountUser Method Tests ---

func TestAccountUserIsAdministrator(t *testing.T) {
	au := &model.AccountUser{Role: "administrator"}
	assert.True(t, au.IsAdministrator())

	au.Role = "agent"
	assert.False(t, au.IsAdministrator())

	au.Role = "custom_role"
	assert.False(t, au.IsAdministrator())
}

func TestAccountUserIsAgent(t *testing.T) {
	au := &model.AccountUser{Role: "agent"}
	assert.True(t, au.IsAgent())

	au.Role = "administrator"
	assert.False(t, au.IsAgent())
}

func TestAccountUserHasCustomRole(t *testing.T) {
	au := &model.AccountUser{Role: "agent", CustomRoleID: 5}
	assert.True(t, au.HasCustomRole())

	au.Role = "agent"
	assert.True(t, au.HasCustomRole())

	au.Role = "custom_role"
	au.CustomRoleID = 0
	assert.False(t, au.HasCustomRole(), "custom_role with CustomRoleID=0 should not count")
}

func TestAccountUserIsOnline(t *testing.T) {
	au := &model.AccountUser{Availability: "online"}
	assert.True(t, au.IsOnline())

	au.Availability = "offline"
	assert.False(t, au.IsOnline())

	au.Availability = "busy"
	assert.False(t, au.IsOnline())
}

// --- CustomRole Method Tests ---

func TestCustomRoleGetPermissionMap(t *testing.T) {
	cr := &model.CustomRole{
		Permissions: `["conversation_manage","contact_manage"]`,
	}
	pm, err := cr.GetPermissionMap()
	assert.NoError(t, err)
	assert.Equal(t, model.PermissionLevelFull, pm[model.DimensionConversationManage])
	assert.Equal(t, model.PermissionLevelFull, pm[model.DimensionContactManage])
	assert.Empty(t, pm[model.DimensionAutomationManage])
}

func TestCustomRoleGetPermissionMapEmpty(t *testing.T) {
	cr := &model.CustomRole{Permissions: "{}"}
	pm, err := cr.GetPermissionMap()
	assert.NoError(t, err)
	assert.Empty(t, pm)

	cr.Permissions = ""
	pm, err = cr.GetPermissionMap()
	assert.NoError(t, err)
	assert.Empty(t, pm)
}

func TestCustomRoleGetPermissionMapInvalid(t *testing.T) {
	cr := &model.CustomRole{Permissions: "not json"}
	pm, err := cr.GetPermissionMap()
	assert.Error(t, err)
	assert.Nil(t, pm)
}

func TestCustomRoleSetPermissionMap(t *testing.T) {
	cr := &model.CustomRole{}
	pm := map[model.PermissionDimension]model.PermissionLevel{
		model.DimensionConversationManage: model.PermissionLevelFull,
		model.DimensionContactManage:      model.PermissionLevelRead,
	}
	err := cr.SetPermissionMap(pm)
	assert.NoError(t, err)
	assert.Contains(t, cr.Permissions, "conversation_manage")
	assert.Contains(t, cr.Permissions, "contact_manage")

	// Verify round-trip
	pm2, err := cr.GetPermissionMap()
	assert.NoError(t, err)
	assert.Equal(t, model.PermissionLevelFull, pm2[model.DimensionConversationManage])
	assert.Equal(t, model.PermissionLevelFull, pm2[model.DimensionContactManage])
}

func TestCustomRoleValidate(t *testing.T) {
	cr := &model.CustomRole{
		Name:        "Valid Role",
		Permissions: `["conversation_manage","contact_manage"]`,
	}
	assert.NoError(t, cr.Validate())

	// Empty name
	cr.Name = ""
	assert.Error(t, cr.Validate())

	// Invalid permission level
	cr.Name = "Invalid Role"
	cr.Permissions = `["conversation_delete"]`
	assert.Error(t, cr.Validate())

	// Invalid JSON
	cr.Permissions = "bad json"
	cr.Name = "BadJSON Role"
	assert.Error(t, cr.Validate())
}

// --- CopilotMessage Method Tests ---

func TestCopilotMessageGetMessageContent(t *testing.T) {
	msg := &model.CopilotMessage{
		Message: json.RawMessage(`{"content": "Hello from copilot", "role": "assistant"}`),
	}
	assert.Equal(t, "Hello from copilot", msg.GetMessageContent())

	// No content field
	msg.Message = json.RawMessage(`{"role": "assistant"}`)
	assert.Equal(t, "", msg.GetMessageContent())

	// Invalid JSON
	msg.Message = json.RawMessage(`invalid`)
	assert.Equal(t, "", msg.GetMessageContent())
}

// --- CopilotThread PreviousHistory Method Test ---

func TestCopilotThreadPreviousHistory(t *testing.T) {
	thread := &model.CopilotThread{}

	messages := []model.CopilotMessage{
		{
			MessageType: model.CopilotMessageTypeUser,
			Message:     json.RawMessage(`{"content": "User question"}`),
		},
		{
			MessageType: model.CopilotMessageTypeAssistant,
			Message:     json.RawMessage(`{"content": "AI answer"}`),
		},
		{
			MessageType: model.CopilotMessageTypeAssistantThinking,
			Message:     json.RawMessage(`{"content": "Thinking trace"}`),
		},
	}

	history := thread.PreviousHistory(messages)
	assert.Len(t, history, 2, "assistant_thinking should be filtered out")
	assert.Equal(t, "user", history[0].Role)
	assert.Equal(t, "User question", history[0].Content)
	assert.Equal(t, "assistant", history[1].Role)
	assert.Equal(t, "AI answer", history[1].Content)
}

// --- Enum Constant Tests ---

func TestConversationStatusConstants(t *testing.T) {
	assert.Equal(t, model.ConversationStatus("open"), model.ConversationStatusOpen)
	assert.Equal(t, model.ConversationStatus("resolved"), model.ConversationStatusResolved)
	assert.Equal(t, model.ConversationStatus("pending"), model.ConversationStatusPending)
	assert.Equal(t, model.ConversationStatus("snoozed"), model.ConversationStatusSnoozed)
}

func TestMessageTypeConstants(t *testing.T) {
	assert.Equal(t, model.MessageType("incoming"), model.MessageTypeIncoming)
	assert.Equal(t, model.MessageType("outgoing"), model.MessageTypeOutgoing)
	assert.Equal(t, model.MessageType("activity"), model.MessageTypeActivity)
	assert.Equal(t, model.MessageType("template"), model.MessageTypeTemplate)
}

func TestAccountUserRoleConstants(t *testing.T) {
	assert.Equal(t, model.AccountUserRole("agent"), model.AccountUserRoleAgent)
	assert.Equal(t, model.AccountUserRole("administrator"), model.AccountUserRoleAdministrator)
}

func TestUserAvailabilityConstants(t *testing.T) {
	assert.Equal(t, model.UserAvailability("online"), model.UserAvailabilityOnline)
	assert.Equal(t, model.UserAvailability("offline"), model.UserAvailabilityOffline)
	assert.Equal(t, model.UserAvailability("busy"), model.UserAvailabilityBusy)
}

func TestPermissionDimensionConstants(t *testing.T) {
	assert.Equal(t, model.PermissionDimension("conversation_manage"), model.DimensionConversationManage)
	assert.Equal(t, model.PermissionDimension("conversation_delete"), model.DimensionConversationDelete)
	assert.Equal(t, model.PermissionDimension("contact_manage"), model.DimensionContactManage)
	assert.Equal(t, model.PermissionDimension("report_manage"), model.DimensionReportManage)
	assert.Equal(t, model.PermissionDimension("knowledge_base_manage"), model.DimensionKnowledgeBaseManage)
	assert.Equal(t, model.PermissionDimension("automation_manage"), model.DimensionAutomationManage)
}

func TestPermissionLevelConstants(t *testing.T) {
	assert.Equal(t, model.PermissionLevel("full"), model.PermissionLevelFull)
	assert.Equal(t, model.PermissionLevel("read"), model.PermissionLevelRead)
	assert.Equal(t, model.PermissionLevel("none"), model.PermissionLevelNone)
}

// --- Model Struct Field Verification Tests ---

func TestAccountStructFields(t *testing.T) {
	acc := model.Account{
		Name:                "Test",
		Domain:              "test.com",
		Locale:              "en",
		Timezone:            "UTC",
		Active:              true,
		Status:              "active",
		FeatureFlags:        `{"feature_x":true}`,
		AutoResolveDuration: 7,
	}
	assert.Equal(t, "Test", acc.Name)
	assert.Equal(t, "test.com", acc.Domain)
	assert.Equal(t, "en", acc.Locale)
	assert.Equal(t, "UTC", acc.Timezone)
	assert.True(t, acc.Active)
	assert.Equal(t, "active", acc.Status)
	assert.Contains(t, acc.FeatureFlags, "feature_x")
	assert.Equal(t, 7, acc.AutoResolveDuration)
}

func TestUserStructFields(t *testing.T) {
	user := model.User{
		AccountID:    1,
		Name:         "Agent",
		Email:        "agent@test.com",
		Password:     "secret",
		Provider:     "email",
		UID:          "ext123",
		AvatarURL:    "https://img.test.com/avatar.png",
		Role:         "agent",
		Active:       true,
		Available:    false,
		TOTPSecret:   "otp_secret",
		TOTPEnabled:  false,
		CustomRoleID: nil,
		SignInCount:  5,
	}
	assert.Equal(t, uint(1), user.AccountID)
	assert.Equal(t, "Agent", user.Name)
	assert.Equal(t, "agent@test.com", user.Email)
	assert.Equal(t, "email", user.Provider)
	assert.Nil(t, user.CustomRoleID)
	assert.Equal(t, 5, user.SignInCount)
}

func TestConversationStructFields(t *testing.T) {
	conv := model.Conversation{
		AccountID:   1,
		InboxID:     2,
		ContactID:   3,
		Status:      "open",
		ChannelType: "web_widget",
		Channel:     "web_widget",
	}
	assert.Equal(t, uint(1), conv.AccountID)
	assert.Equal(t, uint(2), conv.InboxID)
	assert.Equal(t, uint(3), conv.ContactID)
	assert.Equal(t, "open", conv.Status)
	assert.Equal(t, "web_widget", conv.ChannelType)
}

func TestMessageStructFields(t *testing.T) {
	senderID := uint(10)
	msg := model.Message{
		ConversationID: 1,
		AccountID:      2,
		InboxID:        3,
		SenderID:       &senderID,
		SenderType:     "agent",
		Content:        "Hello",
		ContentType:    "text",
		MessageType:    "outgoing",
		Private:        false,
		SourceID:       "ext_src_1",
		External:       true,
	}
	assert.Equal(t, uint(1), msg.ConversationID)
	assert.Equal(t, "agent", msg.SenderType)
	assert.Equal(t, "Hello", msg.Content)
	assert.Equal(t, uint(10), *msg.SenderID)
	assert.True(t, msg.External)
}

func TestContactStructFields(t *testing.T) {
	contact := model.Contact{
		AccountID:   1,
		Name:        "Alice",
		Email:       "alice@test.com",
		PhoneNumber: "+1234567890",
		AvatarURL:   "https://img.test.com/alice.png",
		Identifier:  "ext_id_123",
	}
	assert.Equal(t, uint(1), contact.AccountID)
	assert.Equal(t, "Alice", contact.Name)
	assert.Equal(t, "alice@test.com", contact.Email)
	assert.Equal(t, "+1234567890", contact.PhoneNumber)
}

func TestInboxStructFields(t *testing.T) {
	inbox := model.Inbox{
		AccountID:            1,
		Name:                 "Support",
		ChannelType:          "web_widget",
		ChannelID:            5,
		EnableAutoAssignment: true,
		AutoAssignmentLimit:  10,
		Enabled:              true,
		ChannelConfig:        `{"color":"#1f93ff"}`,
	}
	assert.Equal(t, uint(1), inbox.AccountID)
	assert.Equal(t, "Support", inbox.Name)
	assert.True(t, inbox.EnableAutoAssignment)
	assert.Equal(t, 10, inbox.AutoAssignmentLimit)
}

func TestBaseStructFields(t *testing.T) {
	base := model.Base{}
	assert.Equal(t, uint(0), base.ID)
	assert.True(t, base.CreatedAt.IsZero())
	assert.True(t, base.UpdatedAt.IsZero())
}

func TestCustomRoleValidationError(t *testing.T) {
	err := &model.CustomRoleValidationError{
		Dimension: "conversation_manage",
		Level:     "invalid",
		Message:   "not a valid level",
	}
	assert.Contains(t, err.Error(), "conversation_manage")
	assert.Contains(t, err.Error(), "invalid")
	assert.Contains(t, err.Error(), "not a valid level")
}