// ClipboardCommandPromptComposerTests.swift
// OSGKeyboardTests

import XCTest
@testable import OSGKeyboardShared

final class ClipboardCommandPromptComposerTests: XCTestCase {

    func testUserMessageIncludesMaterialInstructionAndPrevious() {
        let input = ClipboardCommandPromptComposer.Input(
            snapshot: "对方说周末见面",
            instruction: "委婉拒绝",
            previousOutput: "这周不太方便"
        )
        let user = ClipboardCommandPromptComposer.userMessage(input, language: .chinese)
        XCTAssertTrue(user.contains("【材料】"))
        XCTAssertTrue(user.contains("对方说周末见面"))
        XCTAssertTrue(user.contains("【指令】"))
        XCTAssertTrue(user.contains("委婉拒绝"))
        XCTAssertTrue(user.contains("【上一版结果】"))
        XCTAssertTrue(user.contains("这周不太方便"))
    }

    func testSystemPromptDoesNotEmbedR6DictationBan() {
        let system = ClipboardCommandPromptComposer.compose(
            .init(snapshot: "材料", instruction: "总结"),
            language: .chinese
        )
        XCTAssertTrue(system.contains("剪贴板写作助手"))
        XCTAssertFalse(system.contains("不是向你提出的问题或命令"))
    }

    func testEligibilityTrackerKeepsSameChangeCountWindow() {
        let first = ClipboardCommandEligibilityTracker.refresh(
            changeCount: 3,
            rawText: "周末有空一起吃个饭吗？我想聊下项目进度。",
            previous: nil,
            now: 1_000
        )
        XCTAssertNotNil(first)

        let same = ClipboardCommandEligibilityTracker.refresh(
            changeCount: 3,
            rawText: "周末有空一起吃个饭吗？我想聊下项目进度。",
            previous: first,
            now: 1_010
        )
        XCTAssertEqual(same?.startedAt, first?.startedAt)

        let expired = ClipboardCommandEligibilityTracker.refresh(
            changeCount: 3,
            rawText: "周末有空一起吃个饭吗？我想聊下项目进度。",
            previous: first,
            now: 1_040
        )
        XCTAssertNil(expired)
    }
}