// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
// See LICENSE.txt for license information.

package commands

import (
	"context"

	"github.com/mattermost/mattermost/server/public/model"
	"github.com/spf13/cobra"

	"github.com/mattermost/mattermost/server/v8/cmd/mmctl/client"
	"github.com/mattermost/mattermost/server/v8/cmd/mmctl/printer"
)

// createCPAField posts the given CPAField via the admin HTTP client and
// returns the server response reshaped as a typed CPAField.
func (s *MmctlE2ETestSuite) createCPAField(field *model.CPAField) *model.CPAField {
	s.T().Helper()
	created, _, err := s.th.SystemAdminClient.CreateCPAField(context.Background(), field.ToPropertyField())
	s.Require().NoError(err)
	cpa, err := model.NewCPAFieldFromPropertyField(created)
	s.Require().NoError(err)
	return cpa
}

// listCPAFields fetches all CPA fields via the admin HTTP client, returning
// them as typed CPAFields.
func (s *MmctlE2ETestSuite) listCPAFields() []*model.CPAField {
	s.T().Helper()
	fields, _, err := s.th.SystemAdminClient.ListCPAFields(context.Background())
	s.Require().NoError(err)
	out := make([]*model.CPAField, 0, len(fields))
	for _, pf := range fields {
		cpa, err := model.NewCPAFieldFromPropertyField(pf)
		s.Require().NoError(err)
		out = append(out, cpa)
	}
	return out
}

// getCPAField fetches a single CPA field by ID. There is no single-field HTTP
// endpoint, so this filters the full list — sufficient for verifying updates
// in tests with a clean fixture state.
func (s *MmctlE2ETestSuite) getCPAField(id string) *model.CPAField {
	s.T().Helper()
	for _, f := range s.listCPAFields() {
		if f.ID == id {
			return f
		}
	}
	s.T().Fatalf("CPA field %q not found", id)
	return nil
}

// cleanCPAFields removes all existing CPA fields to ensure clean test state
func (s *MmctlE2ETestSuite) cleanCPAFields() {
	s.T().Helper()
	for _, field := range s.listCPAFields() {
		_, err := s.th.SystemAdminClient.DeleteCPAField(context.Background(), field.ID)
		s.Require().NoError(err)
	}
}

func (s *MmctlE2ETestSuite) TestCPAFieldListCmd() {
	s.SetupEnterpriseTestHelper().InitBasic(s.T())
	s.th.App.Srv().SetLicense(model.NewTestLicenseSKU(model.LicenseShortSkuEnterprise))

	s.RunForSystemAdminAndLocal("List CPA fields with no entries", func(c client.Client) {
		printer.Clean()
		s.cleanCPAFields()

		err := cpaFieldListCmdF(c, &cobra.Command{}, []string{})
		s.Require().Nil(err)
		s.Require().Len(printer.GetLines(), 0) // No fields should be present initially
		s.Require().Len(printer.GetErrorLines(), 0)
	})

	s.RunForSystemAdminAndLocal("List CPA fields with entries", func(c client.Client) {
		printer.Clean()
		s.cleanCPAFields()

		// Create a couple of test CPA fields
		textField := &model.CPAField{
			PropertyField: model.PropertyField{
				Name:       "Department",
				Type:       model.PropertyFieldTypeText,
				TargetType: "user",
			},
			Attrs: model.CPAAttrs{
				Managed: "admin",
			},
		}

		selectField := &model.CPAField{
			PropertyField: model.PropertyField{
				Name:       "Level",
				Type:       model.PropertyFieldTypeSelect,
				TargetType: "user",
			},
			Attrs: model.CPAAttrs{
				Managed: "",
				Options: []*model.CustomProfileAttributesSelectOption{
					{ID: model.NewId(), Name: "Junior"},
					{ID: model.NewId(), Name: "Senior"},
				},
			},
		}

		createdTextField := s.createCPAField(textField)
		s.Require().NotNil(createdTextField)

		createdSelectField := s.createCPAField(selectField)
		s.Require().NotNil(createdSelectField)

		// Now test the list command
		err := cpaFieldListCmdF(c, &cobra.Command{}, []string{})
		s.Require().Nil(err)
		s.Require().Len(printer.GetLines(), 2) // Should have 2 fields now
		s.Require().Len(printer.GetErrorLines(), 0)

		// Verify the output contains our created fields
		lines := printer.GetLines()
		s.Require().Len(lines, 2, "Should have exactly 2 output lines for 2 fields")
	})
}

func (s *MmctlE2ETestSuite) TestCPAFieldCreateCmd() {
	s.SetupEnterpriseTestHelper().InitBasic(s.T())
	s.th.App.Srv().SetLicense(model.NewTestLicenseSKU(model.LicenseShortSkuEnterprise))

	s.RunForSystemAdminAndLocal("Create managed text field", func(c client.Client) {
		printer.Clean()
		s.cleanCPAFields()

		// Create command with arguments and managed flag
		cmd := &cobra.Command{}
		cmd.Flags().Bool("managed", false, "")
		cmd.Flags().String("attrs", "", "")
		cmd.Flags().StringSlice("option", []string{}, "")

		// Set the managed flag to true
		err := cmd.Flags().Set("managed", "true")
		s.Require().Nil(err)

		err = cpaFieldCreateCmdF(c, cmd, []string{"Department", "text"})
		s.Require().Nil(err)
		s.Require().Len(printer.GetLines(), 1)
		s.Require().Len(printer.GetErrorLines(), 0)

		// Verify the success message
		output := printer.GetLines()[0].(string)
		s.Require().Contains(output, "Field Department correctly created")

		// Verify field was actually created in the database
		fields := s.listCPAFields()
		s.Require().Len(fields, 1)
		s.Require().Equal("Department", fields[0].Name)
		s.Require().Equal(model.PropertyFieldTypeText, fields[0].Type)
		s.Require().Equal("admin", fields[0].Attrs.Managed)
	})

	s.RunForSystemAdminAndLocal("Create multiselect field with options", func(c client.Client) {
		printer.Clean()
		s.cleanCPAFields()

		// Create command with arguments and option flags
		cmd := &cobra.Command{}
		cmd.Flags().Bool("managed", false, "")
		cmd.Flags().String("attrs", "", "")
		cmd.Flags().StringSlice("option", []string{}, "")

		// Set the option flags
		err := cmd.Flags().Set("option", "Go")
		s.Require().Nil(err)
		err = cmd.Flags().Set("option", "React")
		s.Require().Nil(err)
		err = cmd.Flags().Set("option", "Python")
		s.Require().Nil(err)

		err = cpaFieldCreateCmdF(c, cmd, []string{"Skills", "multiselect"})
		s.Require().Nil(err)
		s.Require().Len(printer.GetLines(), 1)
		s.Require().Len(printer.GetErrorLines(), 0)

		// Verify the success message
		output := printer.GetLines()[0].(string)
		s.Require().Contains(output, "Field Skills correctly created")

		// Verify field was actually created in the database with correct options
		fields := s.listCPAFields()
		s.Require().Len(fields, 1)
		s.Require().Equal("Skills", fields[0].Name)
		s.Require().Equal(model.PropertyFieldTypeMultiselect, fields[0].Type)

		// Verify the options were created
		s.Require().Len(fields[0].Attrs.Options, 3)

		// Extract option names to verify they match what we set
		var optionNames []string
		for _, option := range fields[0].Attrs.Options {
			optionNames = append(optionNames, option.Name)
		}
		s.Require().Contains(optionNames, "Go")
		s.Require().Contains(optionNames, "React")
		s.Require().Contains(optionNames, "Python")
	})
}

func (s *MmctlE2ETestSuite) TestCPAFieldEditCmd() {
	s.SetupEnterpriseTestHelper().InitBasic(s.T())
	s.th.App.Srv().SetLicense(model.NewTestLicenseSKU(model.LicenseShortSkuEnterprise))

	s.RunForSystemAdminAndLocal("Edit nonexistent field should fail", func(c client.Client) {
		printer.Clean()
		s.cleanCPAFields()

		cmd := &cobra.Command{}
		cmd.Flags().String("name", "", "")
		cmd.Flags().Bool("managed", false, "")
		cmd.Flags().String("attrs", "", "")
		cmd.Flags().StringSlice("option", []string{}, "")

		err := cmd.Flags().Set("name", "New Name")
		s.Require().Nil(err)

		err = cpaFieldEditCmdF(c, cmd, []string{"nonexistent-field-id"})
		s.Require().NotNil(err)
		s.Require().Contains(err.Error(), "failed to get field for \"nonexistent-field-id\"")
	})

	s.RunForSystemAdminAndLocal("Edit field using --name and --option flags", func(c client.Client) {
		printer.Clean()
		s.cleanCPAFields()

		// First create a field to edit
		field := &model.CPAField{
			PropertyField: model.PropertyField{
				Name:       "Skills",
				Type:       model.PropertyFieldTypeSelect,
				TargetType: "user",
			},
			Attrs: model.CPAAttrs{
				Options: []*model.CustomProfileAttributesSelectOption{
					{ID: model.NewId(), Name: "Go"},
				},
			},
		}

		createdField := s.createCPAField(field)

		// Now edit the field
		cmd := &cobra.Command{}
		cmd.Flags().String("name", "", "")
		cmd.Flags().Bool("managed", false, "")
		cmd.Flags().String("attrs", "", "")
		cmd.Flags().StringSlice("option", []string{}, "")

		err := cmd.Flags().Set("name", "Programming Languages")
		s.Require().Nil(err)
		err = cmd.Flags().Set("option", "Go")
		s.Require().Nil(err)
		err = cmd.Flags().Set("option", "Python")
		s.Require().Nil(err)

		err = cpaFieldEditCmdF(c, cmd, []string{createdField.ID})
		s.Require().Nil(err)
		s.Require().Len(printer.GetLines(), 1)
		s.Require().Len(printer.GetErrorLines(), 0)

		// Verify the success message
		output := printer.GetLines()[0].(string)
		s.Require().Contains(output, "Field Programming Languages successfully updated")

		// Verify field was actually updated
		updatedField := s.getCPAField(createdField.ID)
		s.Require().Equal("Programming Languages", updatedField.Name)

		// Check options
		s.Require().Len(updatedField.Attrs.Options, 2)

		var optionNames []string
		for _, option := range updatedField.Attrs.Options {
			optionNames = append(optionNames, option.Name)
		}
		s.Require().Contains(optionNames, "Go")
		s.Require().Contains(optionNames, "Python")
	})

	s.RunForSystemAdminAndLocal("Edit field using --managed flag", func(c client.Client) {
		printer.Clean()
		s.cleanCPAFields()

		// First create a field to edit
		field := &model.CPAField{
			PropertyField: model.PropertyField{
				Name:       "Department",
				Type:       model.PropertyFieldTypeText,
				TargetType: "user",
			},
			Attrs: model.CPAAttrs{
				Managed: "",
			},
		}

		createdField := s.createCPAField(field)

		// Now edit the field with --managed flag
		cmd := &cobra.Command{}
		cmd.Flags().String("name", "", "")
		cmd.Flags().Bool("managed", false, "")
		cmd.Flags().String("attrs", "", "")
		cmd.Flags().StringSlice("option", []string{}, "")

		err := cmd.Flags().Set("managed", "true")
		s.Require().Nil(err)

		err = cpaFieldEditCmdF(c, cmd, []string{createdField.ID})
		s.Require().Nil(err)
		s.Require().Len(printer.GetLines(), 1)
		s.Require().Len(printer.GetErrorLines(), 0)

		// Verify field was actually updated
		updatedField := s.getCPAField(createdField.ID)

		// Verify that managed flag was set correctly
		s.Require().Equal("admin", updatedField.Attrs.Managed)
	})

	s.RunForSystemAdminAndLocal("Edit field by name", func(c client.Client) {
		printer.Clean()
		s.cleanCPAFields()

		// First create a field to edit
		field := &model.CPAField{
			PropertyField: model.PropertyField{
				Name:       "Department",
				Type:       model.PropertyFieldTypeText,
				TargetType: "user",
			},
			Attrs: model.CPAAttrs{
				Managed: "",
			},
		}

		createdField := s.createCPAField(field)

		// Now edit the field using its name instead of ID
		cmd := &cobra.Command{}
		cmd.Flags().String("name", "", "")
		cmd.Flags().Bool("managed", false, "")
		cmd.Flags().String("attrs", "", "")
		cmd.Flags().StringSlice("option", []string{}, "")

		err := cmd.Flags().Set("name", "Team")
		s.Require().Nil(err)
		err = cmd.Flags().Set("managed", "true")
		s.Require().Nil(err)

		// Edit using field name "Department" instead of the field ID
		err = cpaFieldEditCmdF(c, cmd, []string{"Department"})
		s.Require().Nil(err)
		s.Require().Len(printer.GetLines(), 1)
		s.Require().Len(printer.GetErrorLines(), 0)

		// Verify the success message
		output := printer.GetLines()[0].(string)
		s.Require().Contains(output, "Field Team successfully updated")

		// Verify field was actually updated by retrieving it
		updatedField := s.getCPAField(createdField.ID)
		s.Require().Equal("Team", updatedField.Name)

		// Check managed status
		s.Require().Equal("admin", updatedField.Attrs.Managed)
	})

	s.RunForSystemAdminAndLocal("Edit multiselect field with option preservation", func(c client.Client) {
		printer.Clean()
		s.cleanCPAFields()

		// First create a multiselect field with two options
		field := &model.CPAField{
			PropertyField: model.PropertyField{
				Name:       "Programming Languages",
				Type:       model.PropertyFieldTypeMultiselect,
				TargetType: "user",
			},
			Attrs: model.CPAAttrs{
				Options: []*model.CustomProfileAttributesSelectOption{
					{ID: model.NewId(), Name: "Go"},
					{ID: model.NewId(), Name: "Python"},
				},
			},
		}

		createdField := s.createCPAField(field)

		// Get the original option IDs to verify they are preserved
		s.Require().Len(createdField.Attrs.Options, 2)

		originalGoID := ""
		originalPythonID := ""
		for _, option := range createdField.Attrs.Options {
			switch option.Name {
			case "Go":
				originalGoID = option.ID
			case "Python":
				originalPythonID = option.ID
			}
		}
		s.Require().NotEmpty(originalGoID)
		s.Require().NotEmpty(originalPythonID)

		// Now edit the field to add a third option while preserving the first two
		cmd := &cobra.Command{}
		cmd.Flags().String("name", "", "")
		cmd.Flags().Bool("managed", false, "")
		cmd.Flags().String("attrs", "", "")
		cmd.Flags().StringSlice("option", []string{}, "")

		err := cmd.Flags().Set("option", "Go")
		s.Require().Nil(err)
		err = cmd.Flags().Set("option", "Python")
		s.Require().Nil(err)
		err = cmd.Flags().Set("option", "React")
		s.Require().Nil(err)

		err = cpaFieldEditCmdF(c, cmd, []string{createdField.ID})
		s.Require().Nil(err)
		s.Require().Len(printer.GetLines(), 1)
		s.Require().Len(printer.GetErrorLines(), 0)

		// Verify the success message
		output := printer.GetLines()[0].(string)
		s.Require().Contains(output, "Field Programming Languages successfully updated")

		// Verify field was actually updated and options are preserved correctly
		updatedField := s.getCPAField(createdField.ID)

		// Check options
		s.Require().Len(updatedField.Attrs.Options, 3)

		// Verify the first two options preserved their original IDs and the third is new
		foundGo := false
		foundPython := false
		foundReact := false

		for _, option := range updatedField.Attrs.Options {
			switch option.Name {
			case "Go":
				s.Require().Equal(originalGoID, option.ID, "Go option should preserve its original ID")
				foundGo = true
			case "Python":
				s.Require().Equal(originalPythonID, option.ID, "Python option should preserve its original ID")
				foundPython = true
			case "React":
				s.Require().NotEmpty(option.ID, "React option should have a valid ID")
				s.Require().NotEqual(originalGoID, option.ID, "React option should have a different ID than Go")
				s.Require().NotEqual(originalPythonID, option.ID, "React option should have a different ID than Python")
				foundReact = true
			}
		}

		s.Require().True(foundGo, "Go option should be present")
		s.Require().True(foundPython, "Python option should be present")
		s.Require().True(foundReact, "React option should be present")
	})
}

func (s *MmctlE2ETestSuite) TestCPAFieldDeleteCmd() {
	s.SetupEnterpriseTestHelper().InitBasic(s.T())
	s.th.App.Srv().SetLicense(model.NewTestLicenseSKU(model.LicenseShortSkuEnterprise))

	s.RunForSystemAdminAndLocal("Delete existing field", func(c client.Client) {
		printer.Clean()
		s.cleanCPAFields()

		// First create a field to delete
		field := &model.CPAField{
			PropertyField: model.PropertyField{
				Name:       "Department",
				Type:       model.PropertyFieldTypeText,
				TargetType: "user",
			},
		}

		createdField := s.createCPAField(field)

		cmd := &cobra.Command{}
		cmd.Flags().Bool("confirm", false, "")

		err := cmd.Flags().Set("confirm", "true")
		s.Require().Nil(err)

		err = cpaFieldDeleteCmdF(c, cmd, []string{createdField.ID})
		s.Require().Nil(err)
		s.Require().Len(printer.GetLines(), 1)
		s.Require().Len(printer.GetErrorLines(), 0)

		// Verify the success message
		output := printer.GetLines()[0].(string)
		s.Require().Contains(output, "Successfully deleted CPA field")

		// Verify field was actually deleted by checking if it exists in the list
		fields := s.listCPAFields()

		// Field should not be in the list anymore
		fieldExists := false
		for _, field := range fields {
			if field.ID == createdField.ID {
				fieldExists = true
				break
			}
		}
		s.Require().False(fieldExists, "Field should have been deleted but still exists in the list")
	})

	s.RunForSystemAdminAndLocal("Delete existing field by name", func(c client.Client) {
		printer.Clean()
		s.cleanCPAFields()

		// First create a field to delete
		field := &model.CPAField{
			PropertyField: model.PropertyField{
				Name:       "Department",
				Type:       model.PropertyFieldTypeText,
				TargetType: "user",
			},
		}

		createdField := s.createCPAField(field)

		cmd := &cobra.Command{}
		cmd.Flags().Bool("confirm", false, "")

		err := cmd.Flags().Set("confirm", "true")
		s.Require().Nil(err)

		// Delete using field name instead of ID
		err = cpaFieldDeleteCmdF(c, cmd, []string{"Department"})
		s.Require().Nil(err)
		s.Require().Len(printer.GetLines(), 1)
		s.Require().Len(printer.GetErrorLines(), 0)

		// Verify the success message
		output := printer.GetLines()[0].(string)
		s.Require().Contains(output, "Successfully deleted CPA field: Department")

		// Verify field was actually deleted by checking if it exists in the list
		fields := s.listCPAFields()

		// Field should not be in the list anymore
		fieldExists := false
		for _, field := range fields {
			if field.ID == createdField.ID {
				fieldExists = true
				break
			}
		}
		s.Require().False(fieldExists, "Field should have been deleted but still exists in the list")
	})

	s.RunForSystemAdminAndLocal("Delete nonexistent field", func(c client.Client) {
		printer.Clean()
		s.cleanCPAFields()

		cmd := &cobra.Command{}
		cmd.Flags().Bool("confirm", false, "")

		err := cmd.Flags().Set("confirm", "true")
		s.Require().Nil(err)

		err = cpaFieldDeleteCmdF(c, cmd, []string{"nonexistent-field-id"})
		s.Require().NotNil(err)
		s.Require().Contains(err.Error(), `failed to get field for "nonexistent-field-id"`)
	})

	s.RunForSystemAdminAndLocal("Delete nonexistent field by name", func(c client.Client) {
		printer.Clean()
		s.cleanCPAFields()

		cmd := &cobra.Command{}
		cmd.Flags().Bool("confirm", false, "")

		err := cmd.Flags().Set("confirm", "true")
		s.Require().Nil(err)

		err = cpaFieldDeleteCmdF(c, cmd, []string{"NonexistentField"})
		s.Require().NotNil(err)
		s.Require().Contains(err.Error(), `failed to get field for "NonexistentField"`)
	})
}