WebVNWrite/src/components/editor/nodes/ChoiceNode.tsx

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'use client'
import { useCallback, useMemo, useState, ChangeEvent } from 'react'
import { Handle, Position, NodeProps, useReactFlow } from 'reactflow'
import { nanoid } from 'nanoid'
import { useEditorContext } from '@/components/editor/EditorContext'
import OptionConditionEditor from '@/components/editor/OptionConditionEditor'
import type { Condition } from '@/types/flowchart'
type ChoiceOption = {
id: string
label: string
condition?: Condition
}
type ChoiceNodeData = {
prompt: string
options: ChoiceOption[]
}
const MIN_OPTIONS = 2
const MAX_OPTIONS = 6
export default function ChoiceNode({ id, data }: NodeProps<ChoiceNodeData>) {
const { setNodes } = useReactFlow()
const [editingConditionOptionId, setEditingConditionOptionId] = useState<string | null>(null)
const updatePrompt = useCallback(
(e: ChangeEvent<HTMLInputElement>) => {
setNodes((nodes) =>
nodes.map((node) =>
node.id === id
? { ...node, data: { ...node.data, prompt: e.target.value } }
: node
)
)
},
[id, setNodes]
)
const updateOptionLabel = useCallback(
(optionId: string, label: string) => {
setNodes((nodes) =>
nodes.map((node) =>
node.id === id
? {
...node,
data: {
...node.data,
options: node.data.options.map((opt: ChoiceOption) =>
opt.id === optionId ? { ...opt, label } : opt
),
},
}
: node
)
)
},
[id, setNodes]
)
const updateOptionCondition = useCallback(
(optionId: string, condition: Condition | undefined) => {
setNodes((nodes) =>
nodes.map((node) =>
node.id === id
? {
...node,
data: {
...node.data,
options: node.data.options.map((opt: ChoiceOption) =>
opt.id === optionId ? { ...opt, condition } : opt
),
},
}
: node
)
)
},
[id, setNodes]
)
const addOption = useCallback(() => {
if (data.options.length >= MAX_OPTIONS) return
setNodes((nodes) =>
nodes.map((node) =>
node.id === id
? {
...node,
data: {
...node.data,
options: [
...node.data.options,
{ id: nanoid(), label: '' },
],
},
}
: node
)
)
}, [id, data.options.length, setNodes])
const removeOption = useCallback(
(optionId: string) => {
if (data.options.length <= MIN_OPTIONS) return
setNodes((nodes) =>
nodes.map((node) =>
node.id === id
? {
...node,
data: {
...node.data,
options: node.data.options.filter(
(opt: ChoiceOption) => opt.id !== optionId
),
},
}
: node
)
)
},
[id, data.options.length, setNodes]
)
const editingOption = useMemo(() => {
if (!editingConditionOptionId) return null
return data.options.find((opt) => opt.id === editingConditionOptionId) || null
}, [editingConditionOptionId, data.options])
const hasInvalidConditionReference = useCallback(
(option: ChoiceOption) => {
if (!option.condition?.variableId) return false
return !variables.some((v) => v.id === option.condition!.variableId)
},
[variables]
)
return (
<>
<div className="min-w-[220px] rounded-lg border-2 border-green-500 bg-green-50 p-3 shadow-md dark:border-green-400 dark:bg-green-950">
<Handle
type="target"
position={Position.Top}
id="input"
className="!h-3 !w-3 !border-2 !border-green-500 !bg-white dark:!bg-zinc-800"
/>
<div className="mb-2 text-xs font-semibold uppercase tracking-wide text-green-700 dark:text-green-300">
Choice
</div>
<input
type="text"
value={data.prompt || ''}
onChange={updatePrompt}
placeholder="What do you choose?"
className="mb-3 w-full rounded border border-green-300 bg-white px-2 py-1 text-sm focus:border-green-500 focus:outline-none focus:ring-1 focus:ring-green-500 dark:border-green-600 dark:bg-zinc-800 dark:text-white dark:placeholder-zinc-400"
/>
<div className="space-y-2">
{data.options.map((option, index) => (
<div key={option.id}>
<div className="relative flex items-center gap-1">
<input
type="text"
value={option.label}
onChange={(e) => updateOptionLabel(option.id, e.target.value)}
placeholder={`Option ${index + 1}`}
className="flex-1 rounded border border-green-300 bg-white px-2 py-1 text-sm focus:border-green-500 focus:outline-none focus:ring-1 focus:ring-green-500 dark:border-green-600 dark:bg-zinc-800 dark:text-white dark:placeholder-zinc-400"
/>
<button
type="button"
onClick={() => setEditingConditionOptionId(option.id)}
className={`flex h-6 w-6 items-center justify-center rounded text-xs ${
option.condition?.variableId
? hasInvalidConditionReference(option)
? 'bg-orange-100 text-orange-600 ring-1 ring-orange-500 dark:bg-orange-900/30 dark:text-orange-400'
: 'bg-blue-100 text-blue-600 dark:bg-blue-900/30 dark:text-blue-400'
: 'text-zinc-400 hover:bg-zinc-100 dark:hover:bg-zinc-700'
}`}
title={option.condition?.variableId ? 'Edit condition' : 'Add condition'}
>
<svg className="h-3.5 w-3.5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
<path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2" />
</svg>
</button>
<button
type="button"
onClick={() => removeOption(option.id)}
disabled={data.options.length <= MIN_OPTIONS}
className="flex h-6 w-6 items-center justify-center rounded text-red-500 hover:bg-red-100 disabled:cursor-not-allowed disabled:opacity-30 disabled:hover:bg-transparent dark:hover:bg-red-900/30"
title="Remove option"
>
×
</button>
<Handle
type="source"
position={Position.Bottom}
id={`option-${index}`}
className="!h-3 !w-3 !border-2 !border-green-500 !bg-white dark:!bg-zinc-800"
style={{
left: `${((index + 1) / (data.options.length + 1)) * 100}%`,
}}
/>
</div>
{option.condition?.variableId && (
<div className={`mt-0.5 ml-1 text-[10px] ${
hasInvalidConditionReference(option)
? 'text-orange-500 dark:text-orange-400'
: 'text-zinc-500 dark:text-zinc-400'
}`}>
if {option.condition.variableName} {option.condition.operator} {String(option.condition.value)}
</div>
)}
</div>
))}
</div>
<button
type="button"
onClick={addOption}
disabled={data.options.length >= MAX_OPTIONS}
className="mt-2 flex w-full items-center justify-center gap-1 rounded border border-dashed border-green-400 py-1 text-sm text-green-600 hover:bg-green-100 disabled:cursor-not-allowed disabled:opacity-30 disabled:hover:bg-transparent dark:border-green-500 dark:text-green-400 dark:hover:bg-green-900/30"
title="Add option"
>
+ Add Option
</button>
</div>
<input
type="text"
value={data.prompt || ''}
onChange={updatePrompt}
placeholder="What do you choose?"
className="mb-3 w-full rounded border border-green-300 bg-white px-2 py-1 text-sm focus:border-green-500 focus:outline-none focus:ring-1 focus:ring-green-500 dark:border-green-600 dark:bg-zinc-800 dark:text-white dark:placeholder-zinc-400"
/>
<div className="space-y-2">
{data.options.map((option, index) => (
<div key={option.id}>
<div className="relative flex items-center gap-1">
<input
type="text"
value={option.label}
onChange={(e) => updateOptionLabel(option.id, e.target.value)}
placeholder={`Option ${index + 1}`}
className="flex-1 rounded border border-green-300 bg-white px-2 py-1 text-sm focus:border-green-500 focus:outline-none focus:ring-1 focus:ring-green-500 dark:border-green-600 dark:bg-zinc-800 dark:text-white dark:placeholder-zinc-400"
/>
<button
type="button"
onClick={() => setEditingConditionOptionId(option.id)}
className={`flex h-6 w-6 items-center justify-center rounded text-xs ${
option.condition
? 'bg-amber-100 text-amber-700 hover:bg-amber-200 dark:bg-amber-900/50 dark:text-amber-300 dark:hover:bg-amber-900/70'
: 'text-zinc-400 hover:bg-zinc-100 hover:text-zinc-600 dark:text-zinc-500 dark:hover:bg-zinc-700 dark:hover:text-zinc-300'
}`}
title={option.condition ? `Condition: ${option.condition.variableName} ${option.condition.operator} ${option.condition.value}` : 'Add condition'}
>
{option.condition ? (
<svg xmlns="http://www.w3.org/2000/svg" className="h-3.5 w-3.5" viewBox="0 0 20 20" fill="currentColor">
<path fillRule="evenodd" d="M11.3 1.046A1 1 0 0112 2v5h4a1 1 0 01.82 1.573l-7 10A1 1 0 018 18v-5H4a1 1 0 01-.82-1.573l7-10a1 1 0 011.12-.38z" clipRule="evenodd" />
</svg>
) : (
<svg xmlns="http://www.w3.org/2000/svg" className="h-3.5 w-3.5" viewBox="0 0 20 20" fill="currentColor">
<path fillRule="evenodd" d="M11.3 1.046A1 1 0 0112 2v5h4a1 1 0 01.82 1.573l-7 10A1 1 0 018 18v-5H4a1 1 0 01-.82-1.573l7-10a1 1 0 011.12-.38z" clipRule="evenodd" />
</svg>
)}
</button>
<button
type="button"
onClick={() => removeOption(option.id)}
disabled={data.options.length <= MIN_OPTIONS}
className="flex h-6 w-6 items-center justify-center rounded text-red-500 hover:bg-red-100 disabled:cursor-not-allowed disabled:opacity-30 disabled:hover:bg-transparent dark:hover:bg-red-900/30"
title="Remove option"
>
&times;
</button>
<Handle
type="source"
position={Position.Bottom}
id={`option-${index}`}
className="!h-3 !w-3 !border-2 !border-green-500 !bg-white dark:!bg-zinc-800"
style={{
left: `${((index + 1) / (data.options.length + 1)) * 100}%`,
}}
/>
</div>
{option.condition && (
<div className="ml-1 mt-0.5 flex items-center gap-1">
<span className="inline-flex items-center rounded-sm bg-amber-100 px-1.5 py-0.5 text-[10px] font-medium text-amber-800 dark:bg-amber-900/40 dark:text-amber-300">
if {option.condition.variableName} {option.condition.operator} {option.condition.value}
</span>
</div>
)}
</div>
))}
</div>
<button
type="button"
onClick={addOption}
disabled={data.options.length >= MAX_OPTIONS}
className="mt-2 flex w-full items-center justify-center gap-1 rounded border border-dashed border-green-400 py-1 text-sm text-green-600 hover:bg-green-100 disabled:cursor-not-allowed disabled:opacity-30 disabled:hover:bg-transparent dark:border-green-500 dark:text-green-400 dark:hover:bg-green-900/30"
title="Add option"
>
+ Add Option
</button>
{editingOption && (
<OptionConditionEditor
optionId={editingOption.id}
optionLabel={editingOption.label}
condition={editingOption.condition}
onSave={handleSaveCondition}
onRemove={handleRemoveCondition}
onCancel={() => setEditingConditionOptionId(null)}
/>
)}
</div>
)
}