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

package model

import (
	"encoding/json"
	"strings"
	"testing"

	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

func TestPropertyField_PreSave(t *testing.T) {
	t.Run("sets ID if empty", func(t *testing.T) {
		pf := &PropertyField{}
		pf.PreSave()
		assert.NotEmpty(t, pf.ID)
		assert.Len(t, pf.ID, 26) // Length of NewId()
	})

	t.Run("keeps existing ID", func(t *testing.T) {
		pf := &PropertyField{ID: "existing_id"}
		pf.PreSave()
		assert.Equal(t, "existing_id", pf.ID)
	})

	t.Run("sets CreateAt if zero", func(t *testing.T) {
		pf := &PropertyField{}
		pf.PreSave()
		assert.NotZero(t, pf.CreateAt)
	})

	t.Run("sets UpdateAt equal to CreateAt", func(t *testing.T) {
		pf := &PropertyField{}
		pf.PreSave()
		assert.Equal(t, pf.CreateAt, pf.UpdateAt)
	})

	t.Run("sets DeleteAt to 0 for new fields", func(t *testing.T) {
		pf := &PropertyField{DeleteAt: 12345}
		pf.PreSave()
		assert.Zero(t, pf.DeleteAt)
	})

	t.Run("always sets DeleteAt to 0", func(t *testing.T) {
		existingCreateAt := int64(12345)
		existingDeleteAt := int64(67890)
		pf := &PropertyField{
			CreateAt: existingCreateAt,
			DeleteAt: existingDeleteAt,
		}
		pf.PreSave()
		assert.Zero(t, pf.DeleteAt)
	})
}

func TestPropertyField_IsValid(t *testing.T) {
	t.Run("valid field", func(t *testing.T) {
		pf := &PropertyField{
			ID:       NewId(),
			GroupID:  NewId(),
			Name:     "test field",
			Type:     PropertyFieldTypeText,
			CreateAt: GetMillis(),
			UpdateAt: GetMillis(),
		}
		require.NoError(t, pf.IsValid())
	})

	t.Run("invalid ID", func(t *testing.T) {
		pf := &PropertyField{
			ID:       "invalid",
			GroupID:  NewId(),
			Name:     "test field",
			Type:     PropertyFieldTypeText,
			CreateAt: GetMillis(),
			UpdateAt: GetMillis(),
		}
		require.Error(t, pf.IsValid())
	})

	t.Run("invalid GroupID", func(t *testing.T) {
		pf := &PropertyField{
			ID:       NewId(),
			GroupID:  "invalid",
			Name:     "test field",
			Type:     PropertyFieldTypeText,
			CreateAt: GetMillis(),
			UpdateAt: GetMillis(),
		}
		require.Error(t, pf.IsValid())
	})

	t.Run("empty name", func(t *testing.T) {
		pf := &PropertyField{
			ID:       NewId(),
			GroupID:  NewId(),
			Name:     "",
			Type:     PropertyFieldTypeText,
			CreateAt: GetMillis(),
			UpdateAt: GetMillis(),
		}
		require.Error(t, pf.IsValid())
	})

	t.Run("invalid type", func(t *testing.T) {
		pf := &PropertyField{
			ID:       NewId(),
			GroupID:  NewId(),
			Name:     "test field",
			Type:     "invalid",
			CreateAt: GetMillis(),
			UpdateAt: GetMillis(),
		}
		require.Error(t, pf.IsValid())
	})

	t.Run("zero CreateAt", func(t *testing.T) {
		pf := &PropertyField{
			ID:       NewId(),
			GroupID:  NewId(),
			Name:     "test field",
			Type:     PropertyFieldTypeText,
			CreateAt: 0,
			UpdateAt: GetMillis(),
		}
		require.Error(t, pf.IsValid())
	})

	t.Run("zero UpdateAt", func(t *testing.T) {
		pf := &PropertyField{
			ID:       NewId(),
			GroupID:  NewId(),
			Name:     "test field",
			Type:     PropertyFieldTypeText,
			CreateAt: GetMillis(),
			UpdateAt: 0,
		}
		require.Error(t, pf.IsValid())
	})

	t.Run("Name exceeds maximum length", func(t *testing.T) {
		longName := strings.Repeat("a", PropertyFieldNameMaxRunes+1)
		pf := &PropertyField{
			ID:       NewId(),
			GroupID:  NewId(),
			Name:     longName,
			Type:     PropertyFieldTypeText,
			CreateAt: GetMillis(),
			UpdateAt: GetMillis(),
		}
		require.Error(t, pf.IsValid())
	})

	t.Run("TargetType exceeds maximum length", func(t *testing.T) {
		longTargetType := strings.Repeat("a", PropertyFieldTargetTypeMaxRunes+1)
		pf := &PropertyField{
			ID:         NewId(),
			GroupID:    NewId(),
			Name:       "test field",
			Type:       PropertyFieldTypeText,
			TargetType: longTargetType,
			CreateAt:   GetMillis(),
			UpdateAt:   GetMillis(),
		}
		require.Error(t, pf.IsValid())
	})

	t.Run("TargetID exceeds maximum length", func(t *testing.T) {
		longTargetID := strings.Repeat("a", PropertyFieldTargetIDMaxRunes+1)
		pf := &PropertyField{
			ID:       NewId(),
			GroupID:  NewId(),
			Name:     "test field",
			Type:     PropertyFieldTypeText,
			TargetID: longTargetID,
			CreateAt: GetMillis(),
			UpdateAt: GetMillis(),
		}
		require.Error(t, pf.IsValid())
	})

	t.Run("Name at maximum length is valid", func(t *testing.T) {
		maxLengthName := strings.Repeat("a", PropertyFieldNameMaxRunes)
		pf := &PropertyField{
			ID:       NewId(),
			GroupID:  NewId(),
			Name:     maxLengthName,
			Type:     PropertyFieldTypeText,
			CreateAt: GetMillis(),
			UpdateAt: GetMillis(),
		}
		require.NoError(t, pf.IsValid())
	})

	t.Run("TargetType at maximum length is valid", func(t *testing.T) {
		maxLengthTargetType := strings.Repeat("a", PropertyFieldTargetTypeMaxRunes)
		pf := &PropertyField{
			ID:         NewId(),
			GroupID:    NewId(),
			Name:       "test field",
			Type:       PropertyFieldTypeText,
			TargetType: maxLengthTargetType,
			CreateAt:   GetMillis(),
			UpdateAt:   GetMillis(),
		}
		require.NoError(t, pf.IsValid())
	})

	t.Run("TargetID at maximum length is valid", func(t *testing.T) {
		maxLengthTargetID := strings.Repeat("a", PropertyFieldTargetIDMaxRunes)
		pf := &PropertyField{
			ID:       NewId(),
			GroupID:  NewId(),
			Name:     "test field",
			Type:     PropertyFieldTypeText,
			TargetID: maxLengthTargetID,
			CreateAt: GetMillis(),
			UpdateAt: GetMillis(),
		}
		require.NoError(t, pf.IsValid())
	})
}

func TestPropertyFieldPatch_IsValid(t *testing.T) {
	t.Run("valid patch", func(t *testing.T) {
		patch := &PropertyFieldPatch{
			Name: NewPointer("test field"),
			Type: NewPointer(PropertyFieldTypeText),
		}
		require.NoError(t, patch.IsValid())
	})

	t.Run("empty name", func(t *testing.T) {
		patch := &PropertyFieldPatch{
			Name: NewPointer(""),
			Type: NewPointer(PropertyFieldTypeText),
		}
		require.Error(t, patch.IsValid())
	})

	t.Run("invalid type", func(t *testing.T) {
		invalidType := PropertyFieldType("invalid")
		patch := &PropertyFieldPatch{
			Name: NewPointer("test field"),
			Type: &invalidType,
		}
		require.Error(t, patch.IsValid())
	})

	t.Run("nil values are valid", func(t *testing.T) {
		patch := &PropertyFieldPatch{
			Name: nil,
			Type: nil,
		}
		require.NoError(t, patch.IsValid())
	})

	t.Run("Name exceeds maximum length", func(t *testing.T) {
		longName := strings.Repeat("a", PropertyFieldNameMaxRunes+1)
		patch := &PropertyFieldPatch{
			Name: &longName,
		}
		require.Error(t, patch.IsValid())
	})

	t.Run("TargetType exceeds maximum length", func(t *testing.T) {
		longTargetType := strings.Repeat("a", PropertyFieldTargetTypeMaxRunes+1)
		patch := &PropertyFieldPatch{
			TargetType: &longTargetType,
		}
		require.Error(t, patch.IsValid())
	})

	t.Run("TargetID exceeds maximum length", func(t *testing.T) {
		longTargetID := strings.Repeat("a", PropertyFieldTargetIDMaxRunes+1)
		patch := &PropertyFieldPatch{
			TargetID: &longTargetID,
		}
		require.Error(t, patch.IsValid())
	})

	t.Run("Name at maximum length is valid", func(t *testing.T) {
		maxLengthName := strings.Repeat("a", PropertyFieldNameMaxRunes)
		patch := &PropertyFieldPatch{
			Name: &maxLengthName,
		}
		require.NoError(t, patch.IsValid())
	})

	t.Run("TargetType at maximum length is valid", func(t *testing.T) {
		maxLengthTargetType := strings.Repeat("a", PropertyFieldTargetTypeMaxRunes)
		patch := &PropertyFieldPatch{
			TargetType: &maxLengthTargetType,
		}
		require.NoError(t, patch.IsValid())
	})

	t.Run("TargetID at maximum length is valid", func(t *testing.T) {
		maxLengthTargetID := strings.Repeat("a", PropertyFieldTargetIDMaxRunes)
		patch := &PropertyFieldPatch{
			TargetID: &maxLengthTargetID,
		}
		require.NoError(t, patch.IsValid())
	})
}

func TestPropertyField_Patch(t *testing.T) {
	t.Run("patches all fields", func(t *testing.T) {
		pf := &PropertyField{
			Name:       "original name",
			Type:       PropertyFieldTypeText,
			TargetID:   "original_target",
			TargetType: "original_type",
		}

		patch := &PropertyFieldPatch{
			Name:       NewPointer("new name"),
			Type:       NewPointer(PropertyFieldTypeSelect),
			TargetID:   NewPointer("new_target"),
			TargetType: NewPointer("new_type"),
			Attrs:      &StringInterface{"key": "value"},
		}

		pf.Patch(patch)

		assert.Equal(t, "new name", pf.Name)
		assert.Equal(t, PropertyFieldTypeSelect, pf.Type)
		assert.Equal(t, "new_target", pf.TargetID)
		assert.Equal(t, "new_type", pf.TargetType)
		assert.EqualValues(t, StringInterface{"key": "value"}, pf.Attrs)
	})

	t.Run("patches only specified fields", func(t *testing.T) {
		pf := &PropertyField{
			Name:       "original name",
			Type:       PropertyFieldTypeText,
			TargetID:   "original_target",
			TargetType: "original_type",
		}

		patch := &PropertyFieldPatch{
			Name: NewPointer("new name"),
		}

		pf.Patch(patch)

		assert.Equal(t, "new name", pf.Name)
		assert.Equal(t, PropertyFieldTypeText, pf.Type)
		assert.Equal(t, "original_target", pf.TargetID)
		assert.Equal(t, "original_type", pf.TargetType)
	})
}

func TestPropertyFieldSearchCursor_IsValid(t *testing.T) {
	t.Run("empty cursor is valid", func(t *testing.T) {
		cursor := PropertyFieldSearchCursor{}
		assert.NoError(t, cursor.IsValid())
	})

	t.Run("valid cursor", func(t *testing.T) {
		cursor := PropertyFieldSearchCursor{
			PropertyFieldID: NewId(),
			CreateAt:        GetMillis(),
		}
		assert.NoError(t, cursor.IsValid())
	})

	t.Run("invalid PropertyFieldID", func(t *testing.T) {
		cursor := PropertyFieldSearchCursor{
			PropertyFieldID: "invalid",
			CreateAt:        GetMillis(),
		}
		assert.Error(t, cursor.IsValid())
	})

	t.Run("zero CreateAt", func(t *testing.T) {
		cursor := PropertyFieldSearchCursor{
			PropertyFieldID: NewId(),
			CreateAt:        0,
		}
		assert.Error(t, cursor.IsValid())
	})

	t.Run("negative CreateAt", func(t *testing.T) {
		cursor := PropertyFieldSearchCursor{
			PropertyFieldID: NewId(),
			CreateAt:        -1,
		}
		assert.Error(t, cursor.IsValid())
	})
}

func TestPluginPropertyOption(t *testing.T) {
	t.Run("NewPluginPropertyOption", func(t *testing.T) {
		id := NewId()
		option := NewPluginPropertyOption(id, "test-name")

		assert.Equal(t, id, option.GetID())
		assert.Equal(t, "test-name", option.GetName())
		assert.NoError(t, option.IsValid())
	})

	t.Run("SetID", func(t *testing.T) {
		option := &PluginPropertyOption{}
		newId := NewId()
		option.SetID(newId)

		assert.Equal(t, newId, option.GetID())
	})

	t.Run("GetValue and SetValue", func(t *testing.T) {
		option := NewPluginPropertyOption(NewId(), "test-name")

		option.SetValue("color", "red")
		option.SetValue("description", "test description")

		assert.Equal(t, "red", option.GetValue("color"))
		assert.Equal(t, "test description", option.GetValue("description"))
		assert.Equal(t, "", option.GetValue("nonexistent"))
	})

	t.Run("IsValid", func(t *testing.T) {
		tests := []struct {
			name    string
			option  *PluginPropertyOption
			wantErr bool
		}{
			{
				name:   "valid option",
				option: NewPluginPropertyOption(NewId(), "test-name"),
			},
			{
				name:    "nil data",
				option:  &PluginPropertyOption{},
				wantErr: true,
			},
			{
				name: "empty id",
				option: &PluginPropertyOption{
					Data: map[string]string{"name": "test"},
				},
				wantErr: true,
			},
			{
				name: "empty name",
				option: &PluginPropertyOption{
					Data: map[string]string{"id": NewId()},
				},
				wantErr: true,
			},
			{
				name: "invalid id",
				option: &PluginPropertyOption{
					Data: map[string]string{
						"id":   "invalid-id-format",
						"name": "test",
					},
				},
				wantErr: true,
			},
		}

		for _, tt := range tests {
			t.Run(tt.name, func(t *testing.T) {
				err := tt.option.IsValid()
				if tt.wantErr {
					assert.Error(t, err)
				} else {
					assert.NoError(t, err)
				}
			})
		}
	})

	t.Run("PropertyOptions with PluginPropertyOption", func(t *testing.T) {
		options := PropertyOptions[*PluginPropertyOption]{
			NewPluginPropertyOption(NewId(), "Option 1"),
			NewPluginPropertyOption(NewId(), "Option 2"),
		}

		// Add custom data
		options[0].SetValue("color", "blue")
		options[1].SetValue("description", "Second option")

		assert.NoError(t, options.IsValid())
		assert.Equal(t, "blue", options[0].GetValue("color"))
		assert.Equal(t, "Second option", options[1].GetValue("description"))
	})

	t.Run("PropertyField with PluginPropertyOptions", func(t *testing.T) {
		fieldID := NewId()
		groupID := NewId()
		fieldName := "Test Field"
		fieldType := PropertyFieldTypeSelect

		field := &PropertyField{
			ID:      fieldID,
			GroupID: groupID,
			Name:    fieldName,
			Type:    fieldType,
			Attrs:   make(StringInterface),
		}

		options := PropertyOptions[*PluginPropertyOption]{
			NewPluginPropertyOption(NewId(), "Option 1"),
			NewPluginPropertyOption(NewId(), "Option 2"),
		}

		field.Attrs[PropertyFieldAttributeOptions] = options

		// Verify the field properties are set correctly
		assert.Equal(t, fieldID, field.ID)
		assert.Equal(t, groupID, field.GroupID)
		assert.Equal(t, fieldName, field.Name)
		assert.Equal(t, fieldType, field.Type)

		// Test that we can retrieve the options
		if optionsFromField, err := NewPropertyOptionsFromFieldAttrs[*PluginPropertyOption](field.Attrs[PropertyFieldAttributeOptions]); err == nil {
			require.Len(t, optionsFromField, 2)
			assert.Equal(t, "Option 1", optionsFromField[0].GetName())
			assert.Equal(t, "Option 2", optionsFromField[1].GetName())
		} else {
			t.Fatalf("Failed to retrieve options from field: %v", err)
		}
	})

	t.Run("PluginPropertyOption JSON marshaling", func(t *testing.T) {
		opt := NewPluginPropertyOption("test-id", "Test Option")
		opt.SetValue("custom", "custom-value")
		opt.SetValue("color", "blue")

		// Test marshaling - should not wrap in "data"
		data, err := json.Marshal(opt)
		require.NoError(t, err)

		// Parse the JSON to verify structure
		var jsonMap map[string]string
		err = json.Unmarshal(data, &jsonMap)
		require.NoError(t, err)

		// Verify the JSON doesn't have a "data" wrapper
		assert.Equal(t, "test-id", jsonMap["id"])
		assert.Equal(t, "Test Option", jsonMap["name"])
		assert.Equal(t, "custom-value", jsonMap["custom"])
		assert.Equal(t, "blue", jsonMap["color"])

		// Test unmarshaling
		var newOpt PluginPropertyOption
		err = json.Unmarshal(data, &newOpt)
		require.NoError(t, err)

		assert.Equal(t, "test-id", newOpt.GetID())
		assert.Equal(t, "Test Option", newOpt.GetName())
		assert.Equal(t, "custom-value", newOpt.GetValue("custom"))
		assert.Equal(t, "blue", newOpt.GetValue("color"))
	})

	t.Run("PluginPropertyOption slice JSON marshaling", func(t *testing.T) {
		options := PropertyOptions[*PluginPropertyOption]{
			NewPluginPropertyOption("id1", "Option 1"),
			NewPluginPropertyOption("id2", "Option 2"),
		}
		options[0].SetValue("priority", "high")
		options[1].SetValue("priority", "low")

		// Test marshaling
		data, err := json.Marshal(options)
		require.NoError(t, err)

		// Verify the JSON structure doesn't have "data" wrappers
		var jsonArray []map[string]string
		err = json.Unmarshal(data, &jsonArray)
		require.NoError(t, err)
		require.Len(t, jsonArray, 2)

		assert.Equal(t, "id1", jsonArray[0]["id"])
		assert.Equal(t, "Option 1", jsonArray[0]["name"])
		assert.Equal(t, "high", jsonArray[0]["priority"])

		assert.Equal(t, "id2", jsonArray[1]["id"])
		assert.Equal(t, "Option 2", jsonArray[1]["name"])
		assert.Equal(t, "low", jsonArray[1]["priority"])

		// Test unmarshaling
		var newOptions PropertyOptions[*PluginPropertyOption]
		err = json.Unmarshal(data, &newOptions)
		require.NoError(t, err)
		require.Len(t, newOptions, 2)

		assert.Equal(t, "id1", newOptions[0].GetID())
		assert.Equal(t, "Option 1", newOptions[0].GetName())
		assert.Equal(t, "high", newOptions[0].GetValue("priority"))

		assert.Equal(t, "id2", newOptions[1].GetID())
		assert.Equal(t, "Option 2", newOptions[1].GetName())
		assert.Equal(t, "low", newOptions[1].GetValue("priority"))
	})
}