import * as convict from 'convict';
import * as dotenv from 'dotenv';

dotenv.config();

const config = convict({

	database: {
		type: {
			doc: 'Type of database to use',
			format: ['sqlite', 'mongodb'],
			default: 'sqlite',
			env: 'DB_TYPE'
		},
		mongodb: {
			connectionUrl: {
				doc: 'MongoDB Connection URL',
				format: '*',
				default: 'mongodb://user:password@localhost:27017/database',
				env: 'DB_MONGODB_CONNECTION_URL'
			}
		},
	},

	executions: {
		// If a workflow executes all the data gets saved by default. This
		// could be a problem when a workflow gets executed a lot and processes
		// a lot of data. To not write the database full it is possible to
		// not save the execution at all.
		// Depending on if the execution did succeed or error a different
		// save behaviour can be set.
		saveDataOnError: {
			doc: 'What workflow execution data to save on error',
			format: ['all', 'none'],
			default: 'all',
			env: 'EXECUTIONS_DATA_SAVE_ON_ERROR'
		},
		saveDataOnSuccess: {
			doc: 'What workflow execution data to save on success',
			format: ['all', 'none'],
			default: 'all',
			env: 'EXECUTIONS_DATA_SAVE_ON_SUCCESS'
		},

		// If the executions of workflows which got started via the editor
		// should be saved. By default they will not be saved as this runs
		// are normally only for testing and debugging. This setting can
		// also be overwritten on a per workflow basis in the workflow settings
		// in the editor.
		saveDataManualExecutions: {
			doc: 'Save data of executions when started manually via editor',
			default: false,
			env: 'EXECUTIONS_DATA_SAVE_MANUAL_EXECUTIONS'
		},
	},

	generic: {
		// The timezone to use. Is important for nodes like "Cron" which start the
		// workflow automatically at a specified time. This setting can also be
		// overwritten on a per worfklow basis in the workflow settings in the
		// editor.
		timezone: {
			doc: 'The timezone to use',
			format: '*',
			default: 'America/New_York',
			env: 'GENERIC_TIMEZONE'
		},
	},

	// How n8n can be reached (Editor & REST-API)
	host: {
		format: String,
		default: 'localhost',
		arg: 'host',
		env: 'N8N_HOST',
		doc: 'Host name n8n can be reached'
	},
	port: {
		format: Number,
		default: 5678,
		arg: 'port',
		env: 'N8N_PORT',
		doc: 'HTTP port n8n can be reached'
	},
	protocol: {
		format: ['http', 'https'],
		default: 'http',
		env: 'N8N_PROTOCOL',
		doc: 'HTTP Protocol via which n8n can be reached'
	},

	endpoints: {
		rest: {
			format: String,
			default: 'rest',
			env: 'N8N_ENDPOINT_REST',
			doc: 'Path for rest endpoint'
		},
		webhook: {
			format: String,
			default: 'webhook',
			env: 'N8N_ENDPOINT_WEBHOOK',
			doc: 'Path for webhook endpoint'
		},
		webhookTest: {
			format: String,
			default: 'webhook-test',
			env: 'N8N_ENDPOINT_WEBHOOK_TEST',
			doc: 'Path for test-webhook endpoint'
		},
	},

	nodes: {
		exclude: {
			doc: 'Nodes not to load',
			format: function check(rawValue) {
				try {
					const values = JSON.parse(rawValue);
					if (!Array.isArray(values)) {
						throw new Error();
					}

					for (const value of values) {
						if (typeof value !== 'string') {
							throw new Error();
						}
					}

				} catch (error) {
					throw new TypeError(`The Nodes to exclude is not a valid Array of strings.`);
				}
			},
			default: '[]',
			env: 'NODES_EXCLUDE'
		},
		errorTriggerType: {
			doc: 'Node Type to use as Error Trigger',
			format: String,
			default: 'n8n-nodes-base.errorTrigger',
			env: 'NODES_ERROR_TRIGGER_TYPE'
		},
	},

});

config.validate({
	allowed: 'strict',
});

export = config;