import * as semver from "semver";
import { type SemVerIncrementType, type ApiExternalsResponse } from "./types";
import { svnList, svnGetLatestTag, svnPropGet } from "./promises";

export class SolutionImplementation {
	private url = "";
	private baseUrl = "";
	private repository = "";
	private repositoryUrl = "";
	private componentFolder: string | undefined = null;
	private _isSolutionComponent = false;
	private _isImplementation = false;
	private implementationUrl = "";
	private type = "";
	private version: string | undefined = null;
	private nextVersion: string | undefined = null;

	private component = "";

	constructor(url: string) {
		this.parseUrl(url);
	}

	getBaseUrl(): string {
		return this.baseUrl;
	}

	getUrl(): string {
		return this.url;
	}

	getImplementationUrl(): string {
		return this.implementationUrl;
	}

	getRepository(): string {
		return this.repository;
	}

	getRepositoryUrl(): string {
		return this.repositoryUrl;
	}

	getComponentFolder(): string | undefined {
		return this.componentFolder;
	}

	isSolutionComponent(): boolean {
		return this._isSolutionComponent;
	}

	isImplementation(): boolean {
		return this._isImplementation;
	}

	getType(): string {
		return this.type;
	}

	getVersion(): string | undefined {
		return this.version;
	}

	public async getNextVersion(
		semVerIncrementType: SemVerIncrementType
	): Promise<string | undefined> {
		await this.getLatestTag()
			.then((result) => {
				if (semver.valid(semver.coerce(result))) {
					const sv: string = result;
					this.nextVersion = semver.inc(sv, semVerIncrementType);
				} else {
					this.nextVersion = null;
				}
			})
			.catch((error) => {
				// Handle error
			});
		return this.nextVersion;
	}

	public async getLatestTag(): Promise<string> {
		try {
			const lastTagOrBranch = await svnGetLatestTag(this.implementationUrl);
			return lastTagOrBranch.name;
		} catch (error) {
			console.error("Error retrieving last tag or branch:", error);
			throw error;
		}
	}

	getTypeAndVersion(): string {
		if ((this.type === "tags" || this.type === "branches") && this.version) {
			return `${this.type}/${this.version}`;
		}

		return `${this.type}`;
	}

	getComponent(): string {
		return this.component;
	}

	getComponentDecoded(): string {
		return decodeURIComponent(this.component);
	}

	getExternalsRaw(): string {
		return decodeURIComponent(this.component);
	}
	// GetExternalsCollection(): externalsCollection {
	//   return decodeURIComponent(this.component);
	// }

	public async getExternals(): Promise<string> {
		const svnOptions = { trustServerCert: true };
		try {
			const response: ApiExternalsResponse = await svnPropGet(
				"svn:externals",
				this.url,
				svnOptions
			);
			const rawExternals: string = response.target.property._;
			return rawExternals;
		} catch (error) {
			console.error("Error retrieving last tag or branch:", error);
			throw error;
		}
	}

	private parseUrl(url: string): void {
		this.url = url;

		const regex = /^(https?:\/\/[^\/]+\/svn\/)/;
		const match = regex.exec(url);

		if (match && match.length > 1) {
			this.baseUrl = match[1];
		} else {
			throw new Error("Invalid URL");
		}

		const segments = url.split("/");
		const svnIndex = segments.indexOf("svn");
		const trunkTagBranchIndex = segments.findIndex(
			(segment, index) =>
				index > svnIndex &&
				(segment === "trunk" || segment === "tags" || segment === "branches")
		);
		this._isSolutionComponent = trunkTagBranchIndex - svnIndex > 2;

		if (svnIndex !== -1 && svnIndex + 1 < segments.length) {
			this.repository = segments[svnIndex + 1];
			this.repositoryUrl = `${this.baseUrl}${this.repository}`;

			if (trunkTagBranchIndex !== -1 && trunkTagBranchIndex - 1 > svnIndex) {
				const nextSegment = segments[trunkTagBranchIndex - 1];

				if (
					nextSegment !== "trunk" &&
					nextSegment !== "tags" &&
					nextSegment !== "branches"
				) {
					if (this._isSolutionComponent) {
						this.componentFolder = nextSegment;
					}
				}
			}

			if (trunkTagBranchIndex !== -1 && trunkTagBranchIndex < segments.length) {
				this.type = segments[trunkTagBranchIndex];

				if (this.type === "tags" || this.type === "branches") {
					if (trunkTagBranchIndex + 1 < segments.length) {
						this.version = segments[trunkTagBranchIndex + 1];
						if (trunkTagBranchIndex + 2 < segments.length) {
							this.component = segments[trunkTagBranchIndex + 2];
						}
					}
				} else if (trunkTagBranchIndex + 1 < segments.length) {
					this.component = segments[trunkTagBranchIndex + 1];
				}
			}

			this._isImplementation =
				this.componentFolder === null && this.component === "";
			this.implementationUrl = segments
				.slice(0, trunkTagBranchIndex + (this.version === null ? 1 : 2))
				.join("/");

			if (this._isImplementation) {
				const rawExternals = this.getExternals();
			}
		} else {
			throw new Error("Invalid URL");
		}
	}
}

// Helper function to retrieve the last tag or branch
// async function getLastTagOrBranch(url: string): Promise<string> {
//   try {
//     const list = await svnListPromise(url);
//     const sortedList = list.sort((a, b) => b.date.getTime() - a.date.getTime());
//     const lastTagOrBranch = sortedList[0].name;
//     return lastTagOrBranch;
//   } catch (error) {
//     throw error;
//   }
// }