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// noinspection ExceptionCaughtLocallyJS import type { Context } from "hono"; import type { ZodTypeAny, z } from "zod"; /** * Represents an error during form data validation. * Contains the Zod issues for detailed feedback. */ export class FormValidationError extends Error { public issues: z.ZodIssue[]; constructor(issues: z.ZodIssue[]) { super(`Form validation failed: ${issues[0]?.message || "Invalid input"}`); this.name = "FormValidationError"; this.issues = issues; } } /** * Parses the request body from the Hono context and validates it against the provided Zod schema. * * @param c - The Hono context object. * @param schema - The Zod schema to validate against. * @returns A promise that resolves with the validated data (typed according to the schema). * @throws {FormValidationError} If validation fails. * @throws {Error} If parsing the body fails for other reasons. */ export async function parseFormData<T extends ZodTypeAny>( c: Context, schema: T, ): Promise<z.infer<T>> { console.log("[parseAndValidateFormData] Attempting to parse and validate form data..."); try { const rawFormData: unknown = await c.req.parseBody(); console.log( "[parseAndValidateFormData] Raw form data parsed:", JSON.stringify(rawFormData, null, 2), ); // Validate the data against the schema const validationResult = schema.safeParse(rawFormData); // Check validation errors if (!validationResult.success) { console.error( "[parseAndValidateFormData] Zod validation failed:", validationResult.error.flatten(), ); throw new FormValidationError(validationResult.error.issues); } // return type safe validated data console.log("[parseAndValidateFormData] Validation successful."); return validationResult.data; } catch (error) { // Handle specific validation errors vs. other potential errors if (error instanceof FormValidationError) { // Just re-throw the validation error throw error; } // Log and throw a generic error for other issues (e.g., network problems during parsing) console.error("[parseAndValidateFormData] Error during form parsing/validation:", error); throw new Error("Failed to parse or validate form data."); } }