import { inspect } from 'node:util';

// § GROUP: Configuration field errors

export class Data_Validation_Failed extends Error {
	constructor(data) {
		const { value, target, expected_description, validation_function, upstream_error } = data;
		const type = value === null ? 'null' : typeof value;

		const target_info = target?.info ? inspect(target.info) : 'unknown target';
		const field_ref = target?.name ? `field "${target.name}"` : 'unknown field';

		const expected_desc = expected_description ?? `data that would pass validation using ${validation_function}`;
		const upstream_error_description = upstream_error ? ` Upstream error was: ${upstream_error}` : '';
		super(`Data validation failed for ${field_ref} of ${target_info}. Encountered data of type "${type}" while expecting "${expected_desc}".${upstream_error_description}`);
		this.data = data;
	}
}

export class Superfluous_Data_Field extends Error {
	constructor(data) {
		const { field_value, field_name, target, upstream_error } = data;
		const type = field_value === null ? 'null' : typeof field_value;

		const target_info = target?.info ? inspect(target.info) : 'unknown target';

		const upstream_error_description = upstream_error ? ` Upstream error was: ${upstream_error}` : '';
		super(`Data validation failed for ${target_info}. Superfluous field "${field_name}" with value of type "${type}" encountered.${upstream_error_description}`);
		this.data = data;
	}
}

export class Data_Coercion_Failed extends Error {
	constructor(data) {
		const { value, target, expected_description, coercion_function, upstream_error } = data;
		const type = value === null ? 'null' : typeof value;

		const target_info = target?.info ? inspect(target.info) : 'unknown target';
		const field_ref = target?.name ? `field "${target.name}"` : 'unknown field';

		const expected_desc = expected_description ?? `data that would be coerced using ${coercion_function}`;
		const upstream_error_description = upstream_error ? ` Upstream error was: ${upstream_error}` : '';
		super(`Data coercion failed for ${field_ref} of ${target_info}. Encountered data of type "${type}" while expecting "${expected_desc}".${upstream_error_description}`);
		this.data = data;
	}
}
// § GROUP: Resolving errors

export class Item_Unresolvable extends Error {
	constructor(data) {
		const { resolver, item } = data;
		const type = item === null ? 'null' : typeof item;
		super(`Cannot resolve item ${inspect(item)} of type "${type}" using resolver ${resolver.constructor.name}`);
		this.data = data;
	}
}


// § GROUP: Storage errors

export class Not_Storable_Error extends Error {
	constructor(data) {
		const { storage, value, property, id } = data;
		const type = value === null ? 'null' : typeof value;
		const location = property ? `property "${property}" of record #${id}` : `record #${id}`;
		super(`Cannot store value of type "${type}" in ${location}: ${inspect(value)}`);
		this.data = data;
	}
}

export class Not_Mutable_Error extends Error {
	constructor(data) {
		const { storage, value, property, id } = data;
		const type = value === null ? 'null' : typeof value;
		const location = property ? `property "${property}" of record #${id}` : `record #${id}`;
		super(`Cannot set ${location}: record is immutable (tried to store value of type "${type}": ${inspect(value)})`);
		this.data = data;
	}
}

export class No_Such_Object_Index_Error extends Error {
	constructor(data) {
		const { storage, property, id } = data;
		const location = property ? `property "${property}" of record #${id}` : `record #${id}`;
		super(`Cannot get ${location}: no such record index`);
		this.data = data;
	}
}