package syntax

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

// PlainEngine is a no-op syntax engine.
// It exists to establish the architecture boundary before Tree-sitter is wired in.
type PlainEngine struct {
	styles style.Styles
}

func NewPlainEngine(styles style.Styles) *PlainEngine {
	return &PlainEngine{styles: styles}
}

func (e *PlainEngine) PrepareBuffer(buf *core.Buffer) {}

func (e *PlainEngine) ApplyEdit(buf *core.Buffer, edit *core.BufferEdit) {}

func (e *PlainEngine) LineStyleMap(buf *core.Buffer, line int) []lipgloss.Style {
	if buf == nil {
		return nil
	}

	text := buf.Line(line)
	runes := []rune(text)
	styleMap := make([]lipgloss.Style, len(runes))
	for i := range styleMap {
		styleMap[i] = e.styles.LineStyle
	}

	return styleMap
}

func (e *PlainEngine) InvalidateBuffer(buf *core.Buffer) {}

func (e *PlainEngine) InvalidateLines(buf *core.Buffer, startLine, endLine int) {}