package action

import (
	"git.gophernest.net/azpect/TextEditor/internal/core"
	"git.gophernest.net/azpect/TextEditor/internal/style"
	tea "github.com/charmbracelet/bubbletea"
)

// MockModel is a shared test implementation of the Model interface.
// Used by test files across multiple packages to avoid duplication.
// All fields are exported to allow direct manipulation in tests.
type MockModel struct {
	WindowsList        []*core.Window
	ActiveWindowVal    *core.Window
	BuffersList        []*core.Buffer
	SettingsVal        core.EditorSettings
	ModeVal            core.Mode
	RegistersMap       map[rune]core.Register
	InsertKeysList     []string
	CommandVal         string
	CommandCursorVal   int
	CommandOutputVal   *core.CommandOutput
	CommandHistoryList []string
	CommandHistoryCur  int
	LastFindVal        core.LastFindCommand
	StylesVal          style.Styles
	LastChangeKeysList []string
}

// NewMockModel creates a mock with an empty buffer and 24x80 window.
func NewMockModel() *MockModel {
	buf := core.NewBufferBuilder().
		WithLines([]string{""}).
		Build()

	win := core.NewWindowBuilder().
		WithBuffer(&buf).
		WithHeight(24).
		WithWidth(80).
		Build()

	return &MockModel{
		WindowsList:     []*core.Window{&win},
		ActiveWindowVal: &win,
		BuffersList:     []*core.Buffer{&buf},
		SettingsVal:     core.NewDefaultSettings(),
		ModeVal:         core.NormalMode,
		RegistersMap:    core.DefaultRegisters(),
	}
}

// NewMockModelWithBuffer creates a mock with a custom buffer.
func NewMockModelWithBuffer(buf *core.Buffer) *MockModel {
	win := core.NewWindowBuilder().
		WithBuffer(buf).
		WithHeight(24).
		WithWidth(80).
		Build()

	return &MockModel{
		WindowsList:     []*core.Window{&win},
		ActiveWindowVal: &win,
		BuffersList:     []*core.Buffer{buf},
		SettingsVal:     core.NewDefaultSettings(),
		ModeVal:         core.NormalMode,
		RegistersMap:    core.DefaultRegisters(),
	}
}

// NewMockModelWithWindow creates a mock with a custom window.
func NewMockModelWithWindow(win *core.Window) *MockModel {
	return &MockModel{
		WindowsList:     []*core.Window{win},
		ActiveWindowVal: win,
		BuffersList:     []*core.Buffer{win.Buffer},
		SettingsVal:     core.NewDefaultSettings(),
		ModeVal:         core.NormalMode,
		RegistersMap:    core.DefaultRegisters(),
	}
}

// ==================================================
// Model Interface Implementation
// ==================================================

// Core Data Access
func (m *MockModel) Windows() []*core.Window        { return m.WindowsList }
func (m *MockModel) ActiveWindow() *core.Window     { return m.ActiveWindowVal }
func (m *MockModel) Buffers() []*core.Buffer        { return m.BuffersList }
func (m *MockModel) SetBuffers(bufs []*core.Buffer) { m.BuffersList = bufs }
func (m *MockModel) ActiveBuffer() *core.Buffer     { return m.ActiveWindowVal.Buffer }

// Insert Mode State
func (m *MockModel) InsertKeys() []string            { return m.InsertKeysList }
func (m *MockModel) SetInsertKeys(keys []string)     { m.InsertKeysList = keys }
func (m *MockModel) SetInsertRecording(count int, a Action) {}
func (m *MockModel) ExitInsertMode()                 {}
func (m *MockModel) SetLastFind(char string, forward, inclusive bool) {
	m.LastFindVal = core.LastFindCommand{Char: char, Forward: forward, Inclusive: inclusive}
}
func (m *MockModel) GetLastFind() *core.LastFindCommand { return &m.LastFindVal }

// Command Mode State
func (m *MockModel) Command() string                          { return m.CommandVal }
func (m *MockModel) SetCommand(cmd string)                    { m.CommandVal = cmd }
func (m *MockModel) CommandCursor() int                       { return m.CommandCursorVal }
func (m *MockModel) SetCommandCursor(cur int)                 { m.CommandCursorVal = cur }
func (m *MockModel) CommandOutput() *core.CommandOutput       { return m.CommandOutputVal }
func (m *MockModel) SetCommandOutput(out *core.CommandOutput) { m.CommandOutputVal = out }
func (m *MockModel) CommandHistory() []string                 { return m.CommandHistoryList }
func (m *MockModel) SetCommandHistory(history []string)       { m.CommandHistoryList = history }
func (m *MockModel) CommandHistoryCursor() int                { return m.CommandHistoryCur }
func (m *MockModel) SetCommandHistoryCursor(cur int)          { m.CommandHistoryCur = cur }

// Editor-wide State
func (m *MockModel) Mode() core.Mode                   { return m.ModeVal }
func (m *MockModel) SetMode(mode core.Mode)            { m.ModeVal = mode }
func (m *MockModel) Settings() core.EditorSettings     { return m.SettingsVal }
func (m *MockModel) SetSettings(s core.EditorSettings) { m.SettingsVal = s }
func (m *MockModel) Styles() style.Styles              { return m.StylesVal }
func (m *MockModel) SetStyles(s style.Styles)          { m.StylesVal = s }

// Registers
func (m *MockModel) Registers() map[rune]core.Register { return m.RegistersMap }
func (m *MockModel) GetRegister(name rune) (core.Register, bool) {
	reg, ok := m.RegistersMap[name]
	return reg, ok
}
func (m *MockModel) SetRegister(name rune, t core.RegisterType, cnt []string) error {
	m.RegistersMap[name] = core.Register{Type: t, Content: cnt}
	return nil
}
func (m *MockModel) UpdateDefaultRegister(t core.RegisterType, cnt []string) {
	m.RegistersMap['"'] = core.Register{Type: t, Content: cnt}
}

// Dot operator
func (m *MockModel) SetLastChangeKeys(keys []string) { m.LastChangeKeysList = keys }
func (m *MockModel) LastChangeKeys() []string        { return m.LastChangeKeysList }
func (m *MockModel) ClearLastChangeKeys()            { m.LastChangeKeysList = []string{} }
func (m *MockModel) HandleKey(key string) tea.Cmd    { return nil }