Revamped backend error handling & improved imports in tests

2 files changed, 99 insertions, 0 deletions

diff --git a/packages/server/src/git/error/index.ts b/packages/server/src/git/error/index.ts
new file mode 100644
index 0000000..b8994d3
--- /dev/null
+++ b/packages/server/src/git/error/index.ts
@@ -0,0 +1,60 @@
+import { ErrorType } from "./types";
+
+export * from "./types";
+
+export class ServerError extends Error {
+	code: number;
+
+	constructor(where: string, error_type: { code: number, message: string }) {
+		super(`A ${where} error has occured: ${error_type.message}`);
+
+		this.name = "Server Error";
+		this.code = error_type.code;
+	}
+}
+
+export enum ErrorWhere {
+	Repository = "repository",
+	Tree = "tree",
+	Tag = "tag",
+	Branch = "branch",
+	Commit = "commit",
+	Diff = "diff",
+	Misc = "misc",
+	Blob = "blob"
+}
+
+/**
+ * A error factory
+ *
+ * @param where - Where the error has occured
+ * @param err_type - What type of error it is
+ * @param args - Parameters for the error type
+ *
+ * @returns A server error
+ *
+ * @example Example usage:
+ * import { ErrorType, NotFoundError, createError } from "./error";
+ *
+ * throw(createError(ErrorType.Repository, NotFoundError, "chili sauce"));
+ */
+export function createError<T extends new (...args: string[]) => ErrorType>(where: ErrorWhere, ErrType: T, ...args: ConstructorParameters<T>): ServerError;
+
+/**
+ * A error factory
+ *
+ * @param where - Where the error has occured
+ * @param err_type - What type of error it is
+ *
+ * @returns A server error
+ *
+ * @example Example usage:
+ * import { ErrorType, UnknownError, createError } from "./error";
+ *
+ * throw(createError(ErrorType.Repository, UnknownError));
+ */
+export function createError<T extends new () => ErrorType>(where: ErrorWhere, ErrType: T): ServerError;
+
+export function createError<T extends new(...args: string[]) => ErrorType>(where: ErrorWhere, ErrType: T, ...args: ConstructorParameters<T>): ServerError {
+	return new ServerError(where, new ErrType(...args));
+}
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diff --git a/packages/server/src/git/error/types.ts b/packages/server/src/git/error/types.ts
new file mode 100644
index 0000000..b8f2de7
--- /dev/null
+++ b/packages/server/src/git/error/types.ts
@@ -0,0 +1,39 @@
+export abstract class ErrorType {
+	code: number;
+	message: string;
+
+	constructor(code: number, message: string) {
+		this.code = code;
+		this.message = message;
+	}
+}
+
+export class UnknownError extends ErrorType {
+	constructor() {
+		super(500, "Unknown error!");
+	}
+}
+
+export class NotFoundError extends ErrorType {
+	constructor(target: string) {
+		super(404, `${target} not found!`);
+	}
+}
+
+export class FailedError extends ErrorType {
+	constructor(attempt: string) {
+		super(500, `Failed to ${attempt}!`);
+	}
+}
+
+export class IsNotError extends ErrorType {
+	constructor(target: string, not: string) {
+		super(500, `${target} is not a ${not}!`);
+	}
+}
+
+export class CommitNotSignedError extends ErrorType {
+	constructor() {
+		super(500, "Commit isn't signed!");
+	}
+}
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