import { VSCodeButton, VSCodeTextField } from "@vscode/webview-ui-toolkit/react"
import { memo, useEffect, useRef, useState } from "react"
import { ApiConfigMeta } from "../../../../src/shared/ExtensionMessage"
import { Dropdown } from "vscrui"
import type { DropdownOption } from "vscrui"

interface ApiConfigManagerProps {
	currentApiConfigName?: string
	listApiConfigMeta?: ApiConfigMeta[]
	onSelectConfig: (configName: string) => void
	onDeleteConfig: (configName: string) => void
	onRenameConfig: (oldName: string, newName: string) => void
	onUpsertConfig: (configName: string) => void
}

const ApiConfigManager = ({
	currentApiConfigName = "",
	listApiConfigMeta = [],
	onSelectConfig,
	onDeleteConfig,
	onRenameConfig,
	onUpsertConfig,
}: ApiConfigManagerProps) => {
	const [editState, setEditState] = useState<"new" | "rename" | null>(null)
	const [inputValue, setInputValue] = useState("")
	const inputRef = useRef<HTMLInputElement>()

	// Focus input when entering edit mode
	useEffect(() => {
		if (editState) {
			setTimeout(() => inputRef.current?.focus(), 0)
		}
	}, [editState])

	// Reset edit state when current profile changes
	useEffect(() => {
		setEditState(null)
		setInputValue("")
	}, [currentApiConfigName])

	const handleAdd = () => {
		const newConfigName = currentApiConfigName + " (copy)"
		onUpsertConfig(newConfigName)
	}

	const handleStartRename = () => {
		setEditState("rename")
		setInputValue(currentApiConfigName || "")
	}

	const handleCancel = () => {
		setEditState(null)
		setInputValue("")
	}

	const handleSave = () => {
		const trimmedValue = inputValue.trim()
		if (!trimmedValue) return

		if (editState === "new") {
			onUpsertConfig(trimmedValue)
		} else if (editState === "rename" && currentApiConfigName) {
			if (currentApiConfigName === trimmedValue) {
				setEditState(null)
				setInputValue("")
				return
			}
			onRenameConfig(currentApiConfigName, trimmedValue)
		}

		setEditState(null)
		setInputValue("")
	}

	const handleDelete = () => {
		if (!currentApiConfigName || !listApiConfigMeta || listApiConfigMeta.length <= 1) return

		// Let the extension handle both deletion and selection
		onDeleteConfig(currentApiConfigName)
	}

	const isOnlyProfile = listApiConfigMeta?.length === 1

	return (
		<div style={{ marginBottom: 5 }}>
			<div
				style={{
					display: "flex",
					flexDirection: "column",
					gap: "2px",
				}}>
				<label htmlFor="config-profile">
					<span style={{ fontWeight: "500" }}>Configuration Profile</span>
				</label>

				{editState ? (
					<div style={{ display: "flex", gap: "4px", alignItems: "center" }}>
						<VSCodeTextField
							ref={inputRef as any}
							value={inputValue}
							onInput={(e: any) => setInputValue(e.target.value)}
							placeholder={editState === "new" ? "Enter profile name" : "Enter new name"}
							style={{ flexGrow: 1 }}
							onKeyDown={(e: any) => {
								if (e.key === "Enter" && inputValue.trim()) {
									handleSave()
								} else if (e.key === "Escape") {
									handleCancel()
								}
							}}
						/>
						<VSCodeButton
							appearance="icon"
							disabled={!inputValue.trim()}
							onClick={handleSave}
							title="Save"
							style={{
								padding: 0,
								margin: 0,
								height: "28px",
								width: "28px",
								minWidth: "28px",
							}}>
							<span className="codicon codicon-check" />
						</VSCodeButton>
						<VSCodeButton
							appearance="icon"
							onClick={handleCancel}
							title="Cancel"
							style={{
								padding: 0,
								margin: 0,
								height: "28px",
								width: "28px",
								minWidth: "28px",
							}}>
							<span className="codicon codicon-close" />
						</VSCodeButton>
					</div>
				) : (
					<>
						<div style={{ display: "flex", gap: "4px", alignItems: "center" }}>
							<Dropdown
								id="config-profile"
								value={currentApiConfigName}
								onChange={(value: unknown) => {
									onSelectConfig((value as DropdownOption).value)
								}}
								style={{
									minWidth: 130,
									zIndex: 1002,
								}}
								role="combobox"
								options={listApiConfigMeta.map((config) => ({
									value: config.name,
									label: config.name,
								}))}
							/>
							<VSCodeButton
								appearance="icon"
								onClick={handleAdd}
								title="Add profile"
								style={{
									padding: 0,
									margin: 0,
									height: "28px",
									width: "28px",
									minWidth: "28px",
								}}>
								<span className="codicon codicon-add" />
							</VSCodeButton>
							{currentApiConfigName && (
								<>
									<VSCodeButton
										appearance="icon"
										onClick={handleStartRename}
										title="Rename profile"
										style={{
											padding: 0,
											margin: 0,
											height: "28px",
											width: "28px",
											minWidth: "28px",
										}}>
										<span className="codicon codicon-edit" />
									</VSCodeButton>
									<VSCodeButton
										appearance="icon"
										onClick={handleDelete}
										title={isOnlyProfile ? "Cannot delete the only profile" : "Delete profile"}
										disabled={isOnlyProfile}
										style={{
											padding: 0,
											margin: 0,
											height: "28px",
											width: "28px",
											minWidth: "28px",
										}}>
										<span className="codicon codicon-trash" />
									</VSCodeButton>
								</>
							)}
						</div>
						<p
							style={{
								fontSize: "12px",
								margin: "5px 0 12px",
								color: "var(--vscode-descriptionForeground)",
							}}>
							Save different API configurations to quickly switch between providers and settings
						</p>
					</>
				)}
			</div>
		</div>
	)
}

export default memo(ApiConfigManager)