import { ICommonObject, IDatabaseEntity, INode, INodeData, INodeOptionsValue, INodeParams } from '../../../src/Interface'
import { getBaseClasses } from '../../../src/utils'
import { DynamicStructuredTool } from './core'
import { z } from 'zod'
import { DataSource } from 'typeorm'

class CustomTool_Tools implements INode {
    label: string
    name: string
    description: string
    type: string
    icon: string
    category: string
    baseClasses: string[]
    inputs: INodeParams[]

    constructor() {
        this.label = 'Custom Tool'
        this.name = 'customTool'
        this.type = 'CustomTool'
        this.icon = 'customtool.svg'
        this.category = 'Tools'
        this.description = `Use custom tool you've created in Flowise within chatflow`
        this.inputs = [
            {
                label: 'Select Tool',
                name: 'selectedTool',
                type: 'asyncOptions',
                loadMethod: 'listTools'
            }
        ]
        this.baseClasses = [this.type, 'Tool', ...getBaseClasses(DynamicStructuredTool)]
    }

    //@ts-ignore
    loadMethods = {
        async listTools(nodeData: INodeData, options: ICommonObject): Promise<INodeOptionsValue[]> {
            const returnData: INodeOptionsValue[] = []

            const appDataSource = options.appDataSource as DataSource
            const databaseEntities = options.databaseEntities as IDatabaseEntity

            if (appDataSource === undefined || !appDataSource) {
                return returnData
            }

            const tools = await appDataSource.getRepository(databaseEntities['Tool']).find()

            for (let i = 0; i < tools.length; i += 1) {
                const data = {
                    label: tools[i].name,
                    name: tools[i].id,
                    description: tools[i].description
                } as INodeOptionsValue
                returnData.push(data)
            }
            return returnData
        }
    }

    async init(nodeData: INodeData, input: string, options: ICommonObject): Promise<any> {
        const selectedToolId = nodeData.inputs?.selectedTool as string

        const appDataSource = options.appDataSource as DataSource
        const databaseEntities = options.databaseEntities as IDatabaseEntity

        try {
            const tool = await appDataSource.getRepository(databaseEntities['Tool']).findOneBy({
                id: selectedToolId
            })

            if (!tool) throw new Error(`Tool ${selectedToolId} not found`)
            const obj = {
                name: tool.name,
                description: tool.description,
                schema: z.object(convertSchemaToZod(tool.schema)),
                code: tool.func
            }
            return new DynamicStructuredTool(obj)
        } catch (e) {
            throw new Error(e)
        }
    }
}

const convertSchemaToZod = (schema: string) => {
    try {
        const parsedSchema = JSON.parse(schema)
        const zodObj: any = {}
        for (const sch of parsedSchema) {
            if (sch.type === 'string') {
                if (sch.required) z.string({ required_error: `${sch.property} required` }).describe(sch.description)
                zodObj[sch.property] = z.string().describe(sch.description)
            } else if (sch.type === 'number') {
                if (sch.required) z.number({ required_error: `${sch.property} required` }).describe(sch.description)
                zodObj[sch.property] = z.number().describe(sch.description)
            } else if (sch.type === 'boolean') {
                if (sch.required) z.boolean({ required_error: `${sch.property} required` }).describe(sch.description)
                zodObj[sch.property] = z.boolean().describe(sch.description)
            }
        }
        return zodObj
    } catch (e) {
        throw new Error(e)
    }
}

module.exports = { nodeClass: CustomTool_Tools }