import { VSCodeButton } from "@vscode/webview-ui-toolkit/react"
import { vscode } from "../utils/vscode"
import { HistoryItem } from "../../../src/shared/HistoryItem"

type HistoryViewProps = {
	taskHistory: HistoryItem[]
	onDone: () => void
}

const HistoryView = ({ taskHistory, onDone }: HistoryViewProps) => {
	const handleHistorySelect = (id: string) => {
		vscode.postMessage({ type: "showTaskWithId", text: id })
	}

	const handleDeleteHistoryItem = (id: string) => {
		vscode.postMessage({ type: "deleteTaskWithId", text: id })
	}

	const handleExportMd = (id: string) => {
		vscode.postMessage({ type: "exportTaskWithId", text: id })
	}

	const formatDate = (timestamp: number) => {
		const date = new Date(timestamp)
		return date
			.toLocaleString("en-US", {
				month: "long",
				day: "numeric",
				hour: "numeric",
				minute: "2-digit",
				hour12: true,
			})
			.replace(", ", " ")
			.replace(" at", ",")
			.toUpperCase()
	}

	return (
		<>
			<style>
				{`
					.history-item:hover {
						background-color: var(--vscode-list-hoverBackground);
					}
					.delete-button {
						opacity: 0;
						pointer-events: none;
					}
					.history-item:hover .delete-button {
						opacity: 1;
						pointer-events: auto;
					}
				`}
			</style>
			<div
				style={{
					position: "fixed",
					top: 0,
					left: 0,
					right: 0,
					bottom: 0,
					display: "flex",
					flexDirection: "column",
					overflow: "hidden",
				}}>
				<div
					style={{
						display: "flex",
						justifyContent: "space-between",
						alignItems: "center",
						padding: "10px 17px 10px 20px",
					}}>
					<h3 style={{ color: "var(--vscode-foreground)", margin: 0 }}>History</h3>
					<VSCodeButton onClick={onDone}>Done</VSCodeButton>
				</div>
				<div style={{ flexGrow: 1, overflowY: "auto", margin: 0 }}>
					{taskHistory.length === 0 && (
						<div
							style={{
								display: "flex",
								flexDirection: "column",
								justifyContent: "center",
								alignItems: "center",
								height: "100%",
								fontStyle: "italic",
								color: "var(--vscode-descriptionForeground)",
								textAlign: "center",
								padding: "0px 10px",
							}}>
							<span
								className="codicon codicon-archive"
								style={{ fontSize: "50px", marginBottom: "15px" }}></span>
							<div>
								No history found,
								<br />
								start a new task to see it here...
							</div>
						</div>
					)}

					{taskHistory.map((item, index) => (
						<div
							key={item.id}
							className="history-item"
							style={{
								cursor: "pointer",
								borderBottom:
									index < taskHistory.length - 1 ? "1px solid var(--vscode-panel-border)" : "none",
							}}
							onClick={() => handleHistorySelect(item.id)}>
							<div
								style={{
									display: "flex",
									flexDirection: "column",
									gap: "8px",
									padding: "12px 20px",
									position: "relative",
								}}>
								<div
									style={{
										display: "flex",
										justifyContent: "space-between",
										alignItems: "center",
									}}>
									<span
										style={{
											color: "var(--vscode-descriptionForeground)",
											fontWeight: 500,
											fontSize: "0.85em",
											textTransform: "uppercase",
										}}>
										{formatDate(item.ts)}
									</span>
									<VSCodeButton
										appearance="icon"
										onClick={(e) => {
											e.stopPropagation()
											handleDeleteHistoryItem(item.id)
										}}
										className="delete-button">
										<span className="codicon codicon-trash"></span>
									</VSCodeButton>
								</div>
								<div
									style={{
										fontSize: "var(--vscode-font-size)",
										color: "var(--vscode-foreground)",
										display: "-webkit-box",
										WebkitLineClamp: 3,
										WebkitBoxOrient: "vertical",
										overflow: "hidden",
										whiteSpace: "pre-wrap",
										wordBreak: "break-word",
										overflowWrap: "anywhere",
									}}>
									{item.task}
								</div>
								<div style={{ display: "flex", flexDirection: "column", gap: "4px" }}>
									<div
										style={{
											display: "flex",
											alignItems: "center",
											gap: "4px",
											flexWrap: "wrap",
										}}>
										<span
											style={{
												fontWeight: 500,
												color: "var(--vscode-descriptionForeground)",
											}}>
											Tokens:
										</span>
										<span
											style={{
												display: "flex",
												alignItems: "center",
												gap: "3px",
												color: "var(--vscode-descriptionForeground)",
											}}>
											<i
												className="codicon codicon-arrow-up"
												style={{
													fontSize: "12px",
													fontWeight: "bold",
													marginBottom: "-2px",
												}}
											/>
											{item.tokensIn.toLocaleString()}
										</span>
										<span
											style={{
												display: "flex",
												alignItems: "center",
												gap: "3px",
												color: "var(--vscode-descriptionForeground)",
											}}>
											<i
												className="codicon codicon-arrow-down"
												style={{
													fontSize: "12px",
													fontWeight: "bold",
													marginBottom: "-2px",
												}}
											/>
											{item.tokensOut.toLocaleString()}
										</span>
									</div>
									{item.cacheWrites && item.cacheReads && (
										<div
											style={{
												display: "flex",
												alignItems: "center",
												gap: "4px",
												flexWrap: "wrap",
											}}>
											<span
												style={{
													fontWeight: 500,
													color: "var(--vscode-descriptionForeground)",
												}}>
												Cache:
											</span>
											<span
												style={{
													display: "flex",
													alignItems: "center",
													gap: "3px",
													color: "var(--vscode-descriptionForeground)",
												}}>
												<i
													className="codicon codicon-database"
													style={{
														fontSize: "12px",
														fontWeight: "bold",
														marginBottom: "-1px",
													}}
												/>
												+{item.cacheWrites.toLocaleString()}
											</span>
											<span
												style={{
													display: "flex",
													alignItems: "center",
													gap: "3px",
													color: "var(--vscode-descriptionForeground)",
												}}>
												<i
													className="codicon codicon-arrow-right"
													style={{ fontSize: "12px", fontWeight: "bold", marginBottom: 0 }}
												/>
												{item.cacheReads.toLocaleString()}
											</span>
										</div>
									)}
									<div
										style={{
											display: "flex",
											justifyContent: "space-between",
											alignItems: "center",
											marginTop: -2,
										}}>
										<div style={{ display: "flex", alignItems: "center", gap: "4px" }}>
											<span
												style={{
													fontWeight: 500,
													color: "var(--vscode-descriptionForeground)",
												}}>
												API Cost:
											</span>
											<span style={{ color: "var(--vscode-descriptionForeground)" }}>
												${item.totalCost.toFixed(4)}
											</span>
										</div>
										<VSCodeButton
											appearance="icon"
											onClick={(e) => {
												e.stopPropagation()
												handleExportMd(item.id)
											}}>
											<div style={{ fontSize: "11px", fontWeight: 500, opacity: 1 }}>
												EXPORT .MD
											</div>
										</VSCodeButton>
									</div>
								</div>
							</div>
						</div>
					))}
				</div>
			</div>
		</>
	)
}

export default HistoryView