import Quickshell
import QtQuick
import QtQuick.Layouts

import qs.components
import qs.services
import qs.config

import core

IComponent {
	id: root

	property int cursorPosition: SelectionState.cursorPosition

	name: "Calculator"

	preview: Component {
		Icon {
			text: ""
		}
	}

	onInputChanged: {
		MathCalc.reset_result();
	}

	process: function () {
		MathCalc.query(input);
		const valid = MathCalc.result && MathCalc.result.length > 0;
		const answer = MathCalc.result ? MathCalc.result
		// 1. Calculus & Summations (Case insensitive)
		.replace(/\bint(?:egral)?\b/gi, "∫").replace(/\bsum\b/gi, "∑")

		// 2. Constants & Symbols (Case insensitive)
		.replace(/\bpi\b/gi, "π").replace(/\btau\b/gi, "τ").replace(/\binf(?:inity)?\b/gi, "∞").replace(/\bdeg\b/gi, "°")

		// 3. Roots & Exponentials (Case insensitive)
		.replace(/\bsqrt\b/gi, "√").replace(/\bcbrt\b/gi, "∛")

		// 4. Rounding & Absolute Value (Case insensitive)
		.replace(/\bceil\(([^\)]+)\)/gi, "⌈$1⌉").replace(/\bfloor\(([^\)]+)\)/gi, "⌊$1⌋").replace(/\bround\b/gi, " ≈ ")

		// 5. Comparison & Equality
		.replace(/\s*<=\s*/g, " ≤ ").replace(/\s*>=\s*/g, " ≥ ").replace(/\s*!=\s*/g, " ≠ ").replace(/\s*==\s*/g, " = ")

		// 6. Exponents to Unicode Superscripts FIRST (Case insensitive for ^n, ^x, ^y)
		.replace(/\^0/g, "⁰").replace(/\^1/g, "¹").replace(/\^2/g, "²").replace(/\^3/g, "³").replace(/\^4/g, "⁴").replace(/\^5/g, "⁵").replace(/\^6/g, "⁶").replace(/\^7/g, "⁷").replace(/\^8/g, "⁸").replace(/\^9/g, "⁹").replace(/\^\+/g, "⁺").replace(/\^-/g, "⁻").replace(/\^n/gi, "ⁿ").replace(/\^x/gi, "ˣ").replace(/\^y/gi, "ʸ")

		// 7. Kalk Number Bases
		.replace(/_0/g, "₀").replace(/_10/g, "₁₀").replace(/_16/g, "₁₆").replace(/_1/g, "₁").replace(/_2/g, "₂").replace(/_3/g, "₃").replace(/_4/g, "₄").replace(/_5/g, "₅").replace(/_6/g, "₆").replace(/_7/g, "₇").replace(/_8/g, "₈").replace(/_9/g, "₉")

		// 8. Arithmetic Operators
		.replace(/\s*\*\s*/g, " × ").replace(/\s*\/\s*/g, " ÷ ").replace(/\s*-\s*/g, " − ").replace(/\s*\+\s*/g, " + ") : "";
		return {
			valid,
			priority: valid,
			answer,
			predictiveCompletion: valid ? ' = ' + answer : ''
		};
	}
	exec: function () {
		Clip.copy(answer);
		MathCalc.reset_ctx();
	}

	IInnerComponent {
		RowLayout {
			spacing: 0
			Layout.fillWidth: true
			Layout.fillHeight: true
			Layout.preferredHeight: parent.height

			Item {
				Layout.fillWidth: true
				IText {
					anchors.centerIn: parent
					elide: cursorPosition > input.length / 2 ? Text.ElideLeft : Text.ElideRight
					width: Math.min(implicitWidth, parent.width - Launcher.innerMargin * 2)
					clip: true
					renderType: Text.CurveRendering
					visible: valid
					text: input
					// 1. Calculus & Summations (Case insensitive)
					.replace(/\bint(?:egral)?\b/gi, "∫").replace(/\bsum\b/gi, "∑")

					// 2. Constants & Symbols (Case insensitive)
					.replace(/\bpi\b/gi, "π").replace(/\btau\b/gi, "τ").replace(/\binf(?:inity)?\b/gi, "∞").replace(/\bdeg\b/gi, "°")

					// 3. Roots & Exponentials (Case insensitive)
					.replace(/\bsqrt\b/gi, "√").replace(/\bcbrt\b/gi, "∛")

					// 4. Rounding & Absolute Value (Case insensitive)
					.replace(/\bceil\(([^\)]+)\)/gi, "⌈$1⌉").replace(/\bfloor\(([^\)]+)\)/gi, "⌊$1⌋").replace(/\bround\b/gi, " ≈ ")

					// 5. Comparison & Equality
					.replace(/\s*<=\s*/g, " ≤ ").replace(/\s*>=\s*/g, " ≥ ").replace(/\s*!=\s*/g, " ≠ ").replace(/\s*==\s*/g, " = ")

					// 6. Exponents to Unicode Superscripts FIRST (Case insensitive for ^n, ^x, ^y)
					.replace(/\^0/g, "⁰").replace(/\^1/g, "¹").replace(/\^2/g, "²").replace(/\^3/g, "³").replace(/\^4/g, "⁴").replace(/\^5/g, "⁵").replace(/\^6/g, "⁶").replace(/\^7/g, "⁷").replace(/\^8/g, "⁸").replace(/\^9/g, "⁹").replace(/\^\+/g, "⁺").replace(/\^-/g, "⁻").replace(/\^n/gi, "ⁿ").replace(/\^x/gi, "ˣ").replace(/\^y/gi, "ʸ")

					// 7. Kalk Number Bases
					.replace(/_0/g, "₀").replace(/_10/g, "₁₀").replace(/_16/g, "₁₆").replace(/_1/g, "₁").replace(/_2/g, "₂").replace(/_3/g, "₃").replace(/_4/g, "₄").replace(/_5/g, "₅").replace(/_6/g, "₆").replace(/_7/g, "₇").replace(/_8/g, "₈").replace(/_9/g, "₉")

					// 8. Arithmetic Operators
					.replace(/\s*\*\s*/g, " × ").replace(/\s*\/\s*/g, " ÷ ").replace(/\s*-\s*/g, " − ").replace(/\s*\+\s*/g, " + ")
					font {
						pixelSize: Launcher.widgetFontSize
						bold: root.isSelectedPriority()
					}
				}
			}

			IText {
				visible: valid
				text: "→"
				font.pixelSize: Launcher.widgetFontSize
				font.bold: root.isSelectedPriority()
			}

			Item {
				Layout.fillWidth: true
				IText {
					animate: true
					anchors.centerIn: parent
					width: Math.min(implicitWidth, parent.width - Launcher.innerMargin * 2)
					renderType: Text.CurveRendering
					visible: valid
					text: valid ? answer : ''
					font {
						pixelSize: Launcher.widgetFontSize
						bold: root.isSelectedPriority()
					}
				}
			}
		}
	}
}