import { SuaveplanError, type SuaveplanErrorOptions } from "@suaveplan/error";
import { TEMPLATE_CODES, type TemplateCode } from "./error-codes.js";

export type { TemplateCode };
export { TEMPLATE_CODES };

// ─── Base ───────────────────────────────────────────────────────────────────

/**
 * Base error class for all template engine failures.
 *
 * Carries the original `template` string and the `renderContext` object so
 * callers can log rich diagnostics without re-parsing the call-stack.
 */
export class TemplateError extends SuaveplanError<TemplateCode> {
    public readonly template: string;
    public readonly renderContext: Record<string, unknown>;

    constructor(
        code: TemplateCode,
        messageKey: string,
        template: string,
        renderContext: Record<string, unknown>,
        options?: SuaveplanErrorOptions
    ) {
        super(code, messageKey, options);
        this.template = template;
        this.renderContext = renderContext;
    }
}

// ─── Plugin error ────────────────────────────────────────────────────────────

/**
 * Emitted when a plugin's `transform()` throws or returns a rejected Promise.
 *
 * Adds `pluginName` and `matchedText` for quick diagnostics.
 */
export class PluginError extends SuaveplanError<TemplateCode> {
    public readonly pluginName: string;
    public readonly match: string;

    constructor(
        message: string,
        pluginName: string,
        match: string,
        cause?: Error
    ) {
        super(
            TEMPLATE_CODES.PLUGIN_ERROR,
            message,
            cause ? { cause } : undefined
        );
        this.pluginName = pluginName;
        this.match = match;
    }
}

// ─── Max depth error ─────────────────────────────────────────────────────────

/**
 * Thrown when recursive template nesting exceeds `TemplateEngineOptions.maxDepth`.
 *
 * Includes `depth` (current) and `maxDepth` (limit) for diagnostics.
 */
export class MaxDepthError extends SuaveplanError<TemplateCode> {
    public readonly depth: number;
    public readonly maxDepth: number;

    constructor(message: string, depth: number, maxDepth: number) {
        super(TEMPLATE_CODES.MAX_DEPTH, message);
        this.depth = depth;
        this.maxDepth = maxDepth;
    }
}