FEAT: NEW WORKFLOW ENGINE (#3160)

Co-authored-by: Joel <iamjoel007@gmail.com>
Co-authored-by: Yeuoly <admin@srmxy.cn>
Co-authored-by: JzoNg <jzongcode@gmail.com>
Co-authored-by: StyleZhang <jasonapring2015@outlook.com>
Co-authored-by: jyong <jyong@dify.ai>
Co-authored-by: nite-knite <nkCoding@gmail.com>
Co-authored-by: jyong <718720800@qq.com>

web/app/components/workflow/nodes/code/default.ts

@@ -0,0 +1,43 @@
+import { BlockEnum } from '../../types'
+import type { NodeDefault } from '../../types'
+import { CodeLanguage, type CodeNodeType } from './types'
+import { ALL_CHAT_AVAILABLE_BLOCKS, ALL_COMPLETION_AVAILABLE_BLOCKS } from '@/app/components/workflow/constants'
+
+const i18nPrefix = 'workflow.errorMsg'
+
+const nodeDefault: NodeDefault<CodeNodeType> = {
+  defaultValue: {
+    code: '',
+    code_language: CodeLanguage.python3,
+    variables: [],
+    outputs: {},
+  },
+  getAvailablePrevNodes(isChatMode: boolean) {
+    const nodes = isChatMode
+      ? ALL_CHAT_AVAILABLE_BLOCKS
+      : ALL_COMPLETION_AVAILABLE_BLOCKS.filter(type => type !== BlockEnum.End)
+    return nodes
+  },
+  getAvailableNextNodes(isChatMode: boolean) {
+    const nodes = isChatMode ? ALL_CHAT_AVAILABLE_BLOCKS : ALL_COMPLETION_AVAILABLE_BLOCKS
+    return nodes
+  },
+  checkValid(payload: CodeNodeType, t: any) {
+    let errorMessages = ''
+    const { code, variables } = payload
+    if (!errorMessages && variables.filter(v => !v.variable).length > 0)
+      errorMessages = t(`${i18nPrefix}.fieldRequired`, { field: t(`${i18nPrefix}.fields.variable`) })
+    if (!errorMessages && variables.filter(v => !v.value_selector.length).length > 0)
+      errorMessages = t(`${i18nPrefix}.fieldRequired`, { field: t(`${i18nPrefix}.fields.variableValue`) })
+    if (!errorMessages && !code)
+      errorMessages = t(`${i18nPrefix}.fieldRequired`, { field: t(`${i18nPrefix}.fields.code`) })
+
+    return {
+      isValid: !errorMessages,
+      errorMessage: errorMessages,
+    }
+  },
+
+}
+
+export default nodeDefault