import { CodeError, errCode, moduleSeed, type ErrCode, type ModuleSeed } from '$libs/errs';
import type { EidosValidationIssue } from './lib/config-types';

export const EIDOS_ERR: ModuleSeed = moduleSeed('eidos');
export const EIDOS_ERR_CONFIG: ErrCode = errCode(EIDOS_ERR, 'config');
export const EIDOS_ERR_CONTEXT: ErrCode = errCode(EIDOS_ERR, 'context');
export const EIDOS_ERR_NO_CONTEXT: ErrCode = errCode(EIDOS_ERR_CONTEXT, 'no_context');
export const EIDOS_ERR_CONFIG_VALIDATION: ErrCode = errCode(EIDOS_ERR_CONFIG, 'validation');
export const EIDOS_ERR_THEME_NOT_FOUND: ErrCode = errCode(EIDOS_ERR, 'theme_not_found');
export const EIDOS_ERR_CSS_VARIABLE: ErrCode = errCode(EIDOS_ERR, 'css_variable');
export const EIDOS_ERR_DOCUMENT: ErrCode = errCode(EIDOS_ERR, 'document');

export class ActiveEidosConfigError extends CodeError {
	constructor(message: string, cause?: unknown) {
		super(EIDOS_ERR_CONFIG, {
			message: `[eidos] ${message}`,
			cause
		});
	}
}

export class ActiveEidosNoContextError extends CodeError {
	constructor() {
		super(EIDOS_ERR_NO_CONTEXT, {
			message:
				'[eidos] No ActiveEidos context found. Call ActiveEidos.create() in the consumer tree that needs visual components.'
		});
	}
}

export class EidosConfigValidationError extends CodeError {
	readonly issues: readonly EidosValidationIssue[];

	constructor(issues: readonly EidosValidationIssue[]) {
		super(EIDOS_ERR_CONFIG_VALIDATION, {
			message: `[eidos] invalid config: ${issues.map((issue) => issue.path).join(', ')}`
		});
		this.issues = issues;
	}
}

export class EidosThemeNotFoundError extends CodeError {
	readonly themeId: string;

	constructor(themeId: string) {
		super(EIDOS_ERR_THEME_NOT_FOUND, {
			message: `[eidos] theme "${themeId}" is not configured`
		});
		this.themeId = themeId;
	}
}

export class EidosCssVariableError extends CodeError {
	readonly variables: readonly string[];

	constructor(variables: readonly string[]) {
		super(EIDOS_ERR_CSS_VARIABLE, {
			message: `[eidos] unknown or invalid CSS variables: ${variables.join(', ')}`
		});
		this.variables = variables;
	}
}

export class EidosConfigDocumentError extends CodeError {
	constructor(message: string, cause?: unknown) {
		super(EIDOS_ERR_DOCUMENT, {
			message: `[eidos] ${message}`,
			cause
		});
	}
}