import { getBaseClasses, getCredentialData, getCredentialParam } from '../../../../src/utils'
import { SaverOptions } from '../interface'
import { ICommonObject, IDatabaseEntity, INode, INodeData, INodeParams } from '../../../../src/Interface'
import { DataSource } from 'typeorm'
import { MySQLSaver } from './mysqlSaver'

class MySQLAgentMemory_Memory implements INode {
    label: string
    name: string
    version: number
    description: string
    type: string
    icon: string
    category: string
    badge: string
    baseClasses: string[]
    inputs: INodeParams[]
    credential: INodeParams

    constructor() {
        this.label = 'MySQL Agent Memory'
        this.name = 'mySQLAgentMemory'
        this.version = 1.0
        this.type = 'AgentMemory'
        this.icon = 'mysql.png'
        this.category = 'Memory'
        this.description = 'Memory for agentflow to remember the state of the conversation using MySQL database'
        this.baseClasses = [this.type, ...getBaseClasses(MySQLSaver)]
        this.credential = {
            label: 'Connect Credential',
            name: 'credential',
            type: 'credential',
            credentialNames: ['MySQLApi'],
            optional: true
        }
        this.inputs = [
            {
                label: 'Host',
                name: 'host',
                type: 'string'
            },
            {
                label: 'Database',
                name: 'database',
                type: 'string'
            },
            {
                label: 'Port',
                name: 'port',
                type: 'number',
                default: '3306'
            },
            {
                label: 'Additional Connection Configuration',
                name: 'additionalConfig',
                type: 'json',
                additionalParams: true,
                optional: true
            }
        ]
    }

    async init(nodeData: INodeData, _: string, options: ICommonObject): Promise<any> {
        const additionalConfig = nodeData.inputs?.additionalConfig as string
        const databaseEntities = options.databaseEntities as IDatabaseEntity
        const chatflowid = options.chatflowid as string
        const appDataSource = options.appDataSource as DataSource
        const orgId = options.orgId as string

        let additionalConfiguration = {}
        if (additionalConfig) {
            try {
                additionalConfiguration = typeof additionalConfig === 'object' ? additionalConfig : JSON.parse(additionalConfig)
            } catch (exception) {
                throw new Error('Invalid JSON in the Additional Configuration: ' + exception)
            }
        }

        const threadId = options.sessionId || options.chatId

        let datasourceOptions: ICommonObject = {
            ...additionalConfiguration,
            type: 'mysql'
        }

        const credentialData = await getCredentialData(nodeData.credential ?? '', options)
        const user = getCredentialParam('user', credentialData, nodeData)
        const password = getCredentialParam('password', credentialData, nodeData)
        const _port = (nodeData.inputs?.port as string) || '3306'
        const port = parseInt(_port)
        datasourceOptions = {
            ...datasourceOptions,
            host: nodeData.inputs?.host as string,
            port,
            database: nodeData.inputs?.database as string,
            username: user,
            user: user,
            password: password,
            charset: 'utf8mb4'
        }
        const args: SaverOptions = {
            datasourceOptions,
            threadId,
            appDataSource,
            databaseEntities,
            chatflowid,
            orgId
        }
        const recordManager = new MySQLSaver(args)
        return recordManager
    }
}

module.exports = { nodeClass: MySQLAgentMemory_Memory }
