|
| 1 | +/** |
| 2 | + * ERD Canvas Panel |
| 3 | + * |
| 4 | + * Visualizes Entity Relationship Diagrams with multiple renderer options: |
| 5 | + * - Canvas (tldraw): Freeform infinite canvas |
| 6 | + * - Graph (React Flow): Structured node graph |
| 7 | + * - JSON: Raw data inspector |
| 8 | + * |
| 9 | + * Supports Laravel and Rails schema parsing. |
| 10 | + */ |
| 11 | + |
| 12 | +import { useCallback, useEffect, useState, useRef } from 'react' |
| 13 | +import { TldrawRenderer, ReactFlowRenderer, JsonRenderer } from './renderers' |
| 14 | +import { filterSchemaByRelationshipCount } from './layout/erd-layout' |
| 15 | +import type { ERDSchema, ERDFramework } from '@/lib/services/erd/erd-types' |
| 16 | + |
| 17 | +const INITIAL_RELATIONSHIP_FILTER_MIN = 3 |
| 18 | + |
| 19 | +// Renderer types |
| 20 | +type RendererType = 'tldraw' | 'reactflow' | 'json' |
| 21 | + |
| 22 | +interface RendererOption { |
| 23 | + id: RendererType |
| 24 | + label: string |
| 25 | + icon: string |
| 26 | + title: string |
| 27 | +} |
| 28 | + |
| 29 | +const RENDERER_OPTIONS: RendererOption[] = [ |
| 30 | + { id: 'tldraw', label: 'Canvas', icon: '◫', title: 'Infinite canvas (tldraw)' }, |
| 31 | + { id: 'reactflow', label: 'Graph', icon: '◉', title: 'Node graph (React Flow)' }, |
| 32 | + { id: 'json', label: 'JSON', icon: '{ }', title: 'Raw data inspector' }, |
| 33 | +] |
| 34 | + |
| 35 | +interface ERDCanvasPanelProps { |
| 36 | + repoPath: string | null |
| 37 | +} |
| 38 | + |
| 39 | +type LoadingState = 'idle' | 'loading' | 'success' | 'error' | 'no-schema' |
| 40 | + |
| 41 | +export function ERDCanvasPanel({ repoPath }: ERDCanvasPanelProps) { |
| 42 | + const initialFilterApplied = useRef(false) |
| 43 | + const loadVersionRef = useRef(0) // Track load version to prevent stale updates |
| 44 | + const [schema, setSchema] = useState<ERDSchema | null>(null) |
| 45 | + const [framework, setFramework] = useState<ERDFramework | null>(null) |
| 46 | + const [loadingState, setLoadingState] = useState<LoadingState>('idle') |
| 47 | + const [errorMessage, setErrorMessage] = useState<string | null>(null) |
| 48 | + const [renderer, setRenderer] = useState<RendererType>('tldraw') |
| 49 | + |
| 50 | + // Reset initial filter when repo changes |
| 51 | + useEffect(() => { |
| 52 | + initialFilterApplied.current = false |
| 53 | + }, [repoPath]) |
| 54 | + |
| 55 | + // Load ERD schema when repo path changes |
| 56 | + const loadSchema = useCallback(async () => { |
| 57 | + if (!repoPath) { |
| 58 | + setLoadingState('idle') |
| 59 | + setSchema(null) |
| 60 | + return |
| 61 | + } |
| 62 | + |
| 63 | + // Increment version to invalidate any in-flight requests |
| 64 | + const currentVersion = ++loadVersionRef.current |
| 65 | + |
| 66 | + setLoadingState('loading') |
| 67 | + setErrorMessage(null) |
| 68 | + |
| 69 | + try { |
| 70 | + // Detect framework first |
| 71 | + const frameworkResult = await window.electronAPI.detectERDFramework(repoPath) |
| 72 | + |
| 73 | + // Check if this request is still current (user may have switched repos) |
| 74 | + if (loadVersionRef.current !== currentVersion) return |
| 75 | + |
| 76 | + if (frameworkResult.success && frameworkResult.data) { |
| 77 | + setFramework(frameworkResult.data as ERDFramework) |
| 78 | + } |
| 79 | + |
| 80 | + // Parse schema |
| 81 | + const result = await window.electronAPI.getERDSchema(repoPath) |
| 82 | + |
| 83 | + // Check again after async operation |
| 84 | + if (loadVersionRef.current !== currentVersion) return |
| 85 | + |
| 86 | + if (result.success && result.data) { |
| 87 | + const parsedSchema = result.data as ERDSchema |
| 88 | + let schemaToRender = parsedSchema |
| 89 | + |
| 90 | + if (!initialFilterApplied.current) { |
| 91 | + const filteredSchema = filterSchemaByRelationshipCount(parsedSchema, INITIAL_RELATIONSHIP_FILTER_MIN) |
| 92 | + if (filteredSchema.entities.length > 0) { |
| 93 | + schemaToRender = filteredSchema |
| 94 | + } |
| 95 | + initialFilterApplied.current = true |
| 96 | + } |
| 97 | + |
| 98 | + if (schemaToRender.entities.length === 0) { |
| 99 | + setLoadingState('no-schema') |
| 100 | + setSchema(null) |
| 101 | + } else { |
| 102 | + setSchema(schemaToRender) |
| 103 | + setLoadingState('success') |
| 104 | + } |
| 105 | + } else { |
| 106 | + setErrorMessage(result.message || 'Failed to parse schema') |
| 107 | + setLoadingState('error') |
| 108 | + } |
| 109 | + } catch (err) { |
| 110 | + // Only update error state if this request is still current |
| 111 | + if (loadVersionRef.current !== currentVersion) return |
| 112 | + setErrorMessage(err instanceof Error ? err.message : 'Unknown error') |
| 113 | + setLoadingState('error') |
| 114 | + } |
| 115 | + }, [repoPath]) |
| 116 | + |
| 117 | + // Load schema on mount and when repo changes |
| 118 | + useEffect(() => { |
| 119 | + loadSchema() |
| 120 | + }, [loadSchema]) |
| 121 | + |
| 122 | + // Refresh handler |
| 123 | + const handleRefresh = useCallback(() => { |
| 124 | + // Reset filter flag so the improved filter runs again |
| 125 | + initialFilterApplied.current = false |
| 126 | + loadSchema() |
| 127 | + }, [loadSchema]) |
| 128 | + |
| 129 | + // Framework badge |
| 130 | + const frameworkBadge = framework && framework !== 'generic' && ( |
| 131 | + <span className={`erd-framework-badge erd-framework-${framework}`}> |
| 132 | + {framework === 'laravel' ? '🐘 Laravel' : '💎 Rails'} |
| 133 | + </span> |
| 134 | + ) |
| 135 | + |
| 136 | + // Render the selected renderer |
| 137 | + const renderContent = () => { |
| 138 | + switch (renderer) { |
| 139 | + case 'tldraw': |
| 140 | + return <TldrawRenderer schema={schema} /> |
| 141 | + case 'reactflow': |
| 142 | + return <ReactFlowRenderer schema={schema} /> |
| 143 | + case 'json': |
| 144 | + return <JsonRenderer schema={schema} /> |
| 145 | + default: |
| 146 | + return <TldrawRenderer schema={schema} /> |
| 147 | + } |
| 148 | + } |
| 149 | + |
| 150 | + // Render loading/error states |
| 151 | + if (loadingState === 'idle' || !repoPath) { |
| 152 | + return ( |
| 153 | + <div className="erd-canvas-container erd-empty-state"> |
| 154 | + <div className="erd-empty-content"> |
| 155 | + <span className="erd-empty-icon">📊</span> |
| 156 | + <p>Select a repository to visualize its ERD</p> |
| 157 | + </div> |
| 158 | + </div> |
| 159 | + ) |
| 160 | + } |
| 161 | + |
| 162 | + if (loadingState === 'loading') { |
| 163 | + return ( |
| 164 | + <div className="erd-canvas-container erd-loading-state"> |
| 165 | + <div className="erd-loading-content"> |
| 166 | + <span className="erd-loading-spinner" /> |
| 167 | + <p>Parsing database schema...</p> |
| 168 | + </div> |
| 169 | + </div> |
| 170 | + ) |
| 171 | + } |
| 172 | + |
| 173 | + if (loadingState === 'error') { |
| 174 | + return ( |
| 175 | + <div className="erd-canvas-container erd-error-state"> |
| 176 | + <div className="erd-error-content"> |
| 177 | + <span className="erd-error-icon">⚠️</span> |
| 178 | + <p>Failed to parse schema</p> |
| 179 | + <p className="erd-error-message">{errorMessage}</p> |
| 180 | + <button className="erd-retry-button" onClick={handleRefresh}> |
| 181 | + Retry |
| 182 | + </button> |
| 183 | + </div> |
| 184 | + </div> |
| 185 | + ) |
| 186 | + } |
| 187 | + |
| 188 | + if (loadingState === 'no-schema') { |
| 189 | + return ( |
| 190 | + <div className="erd-canvas-container erd-empty-state"> |
| 191 | + <div className="erd-empty-content"> |
| 192 | + <span className="erd-empty-icon">🔍</span> |
| 193 | + <p>No database schema found</p> |
| 194 | + <p className="erd-empty-hint">Supports Laravel migrations, Rails schema.rb, and Mermaid ERD files</p> |
| 195 | + <button className="erd-retry-button" onClick={handleRefresh}> |
| 196 | + Scan Again |
| 197 | + </button> |
| 198 | + </div> |
| 199 | + </div> |
| 200 | + ) |
| 201 | + } |
| 202 | + |
| 203 | + // Success state - render selected visualization |
| 204 | + return ( |
| 205 | + <div className="erd-canvas-container"> |
| 206 | + <div className="erd-canvas-header"> |
| 207 | + <div className="erd-canvas-title"> |
| 208 | + {frameworkBadge} |
| 209 | + <span className="erd-entity-count"> |
| 210 | + {schema?.entities.length || 0} tables, {schema?.relationships.length || 0} relationships |
| 211 | + </span> |
| 212 | + </div> |
| 213 | + <div className="erd-canvas-actions"> |
| 214 | + {/* Renderer toggle */} |
| 215 | + <div className="erd-renderer-toggle"> |
| 216 | + {RENDERER_OPTIONS.map((option) => ( |
| 217 | + <button |
| 218 | + key={option.id} |
| 219 | + className={`erd-renderer-btn ${renderer === option.id ? 'active' : ''}`} |
| 220 | + onClick={() => setRenderer(option.id)} |
| 221 | + title={option.title} |
| 222 | + > |
| 223 | + <span className="erd-renderer-icon">{option.icon}</span> |
| 224 | + <span className="erd-renderer-label">{option.label}</span> |
| 225 | + </button> |
| 226 | + ))} |
| 227 | + </div> |
| 228 | + {/* Refresh button */} |
| 229 | + <button className="erd-action-button" onClick={handleRefresh} title="Refresh schema"> |
| 230 | + ↻ |
| 231 | + </button> |
| 232 | + </div> |
| 233 | + </div> |
| 234 | + <div className="erd-canvas-wrapper">{renderContent()}</div> |
| 235 | + </div> |
| 236 | + ) |
| 237 | +} |
| 238 | + |
| 239 | +export default ERDCanvasPanel |
0 commit comments