import * as relations from "@kksh/drizzle/relations"
import * as schema from "@kksh/drizzle/schema"
import { CmdType, Ext, ExtCmd, ExtData, SearchMode, SearchModeEnum, SQLSortOrder, SQLSortOrderEnum } from "@kunkunapi/src/models"
import * as orm from "drizzle-orm"
import type { SelectedFields } from "drizzle-orm/sqlite-core"
import * as v from "valibot"
import { db } from "./database"

/* -------------------------------------------------------------------------- */
/*                             Built-in Extensions                            */
/* -------------------------------------------------------------------------- */

/* -------------------------------------------------------------------------- */
/*                               Extension CRUD                               */
/* -------------------------------------------------------------------------- */
export async function getUniqueExtensionByIdentifier(identifier: string): Promise<Ext | undefined> {
	const ext = await db
		.select()
		.from(schema.extensions)
		.where(orm.eq(schema.extensions.identifier, identifier))
		.get()
	return v.parse(v.optional(Ext), ext)
}

/**
 * Use this function when you expect the extension to exist. Such as builtin extensions.
 * @param identifier
 * @returns
 */
export function getExtensionByIdentifierExpectExists(identifier: string): Promise<Ext> {
	return getUniqueExtensionByIdentifier(identifier).then((ext) => {
		if (!ext) {
			throw new Error(`Unexpexted Error: Extension ${identifier} not found`)
		}
		return ext
	})
}

export async function getAllExtensions(): Promise<Ext[]> {
	const exts = await db.select().from(schema.extensions).all()
	return v.parse(v.array(Ext), exts)
}

/**
 * There can be duplicate extensions with the same identifier. Store and Dev extensions can have the same identifier.
 * But install path must be unique.
 * @param path
 */
export async function getUniqueExtensionByPath(path: string) {
	const ext = await db
		.select()
		.from(schema.extensions)
		.where(orm.eq(schema.extensions.path, path))
		.get()
	return v.parse(Ext, ext)
}

export function getAllExtensionsByIdentifier(identifier: string): Promise<Ext[]> {
	return db
		.select()
		.from(schema.extensions)
		.where(orm.eq(schema.extensions.identifier, identifier))
		.all()
		.then((exts) => v.parse(v.array(Ext), exts))
}

export function deleteExtensionByPath(path: string): Promise<void> {
	return db
		.delete(schema.extensions)
		.where(orm.eq(schema.extensions.path, path))
		.run()
		.then(() => undefined)
}

export function deleteExtensionByExtId(extId: number): Promise<void> {
	return db
		.delete(schema.extensions)
		.where(orm.eq(schema.extensions.extId, extId))
		.run()
		.then(() => undefined)
}

/* -------------------------------------------------------------------------- */
/*                           Extension Command CRUD                           */
/* -------------------------------------------------------------------------- */

// export async function getExtensionWithCmdsByIdentifier(identifier: string): Promise<ExtWithCmds> {
// 	const ext = await db
// 		.select({
// 			...schema.extensions,
// 			commands: relations.commandsRelations
// 		})
// 		.from(schema.extensions)
// 		.leftJoin(schema.commands, orm.eq(schema.extensions.extId, schema.commands.extId))
// 		.where(orm.eq(schema.extensions.identifier, identifier))
// 		.get()

// 	// return v.parse(v.nullable(ExtWithCmds), ext);
// }

export async function getCmdById(cmdId: number): Promise<ExtCmd> {
	const cmd = await db
		.select()
		.from(schema.commands)
		.where(orm.eq(schema.commands.cmdId, cmdId))
		.get()
	return v.parse(ExtCmd, cmd)
}

export async function getAllCmds(): Promise<ExtCmd[]> {
	const cmds = await db.select().from(schema.commands).all()
	return v.parse(v.array(ExtCmd), cmds)
}

export function getCommandsByExtId(extId: number) {
	return db
		.select()
		.from(schema.commands)
		.where(orm.eq(schema.commands.extId, extId))
		.all()
		.then((cmds) => v.parse(v.array(ExtCmd), cmds))
}

export function deleteCmdById(cmdId: number) {
	return db
		.delete(schema.commands)
		.where(orm.eq(schema.commands.cmdId, cmdId))
		.run()
		.then(() => undefined)
}

export function updateCmdByID(data: {
	cmdId: number
	name: string
	cmdType: CmdType
	data: string
	alias?: string
	hotkey?: string
	enabled: boolean
}) {
	return db
		.update(schema.commands)
		.set({
			name: data.name,
			type: data.cmdType,
			data: data.data,
			alias: data.alias, // optional
			hotkey: data.hotkey, // optional
			enabled: data.enabled
			// in drizzle schema, use integer({ mode: 'boolean' }) for boolean sqlite
			// enabled: data.enabled ? String(data.enabled) : undefined
		})
		.where(orm.eq(schema.commands.cmdId, data.cmdId))
		.run()
		.then(() => undefined)
}

/* -------------------------------------------------------------------------- */
/*                             Extension Data CRUD                            */
/* -------------------------------------------------------------------------- */
export const ExtDataField = v.union([v.literal("data"), v.literal("search_text")])
export type ExtDataField = v.InferOutput<typeof ExtDataField>

function convertRawExtDataToExtData(rawData?: {
	createdAt: string
	updatedAt: string
	data: null | string
	searchText?: null | string
	dataId: number
	extId: number
	dataType: string
}): ExtData | undefined {
	if (!rawData) {
		return rawData
	}
	const parsedRes = v.safeParse(ExtData, {
		...rawData,
		createdAt: new Date(rawData.createdAt),
		updatedAt: new Date(rawData.updatedAt),
		data: rawData.data ?? undefined,
		searchText: rawData.searchText ?? undefined
	})
	if (parsedRes.success) {
		return parsedRes.output
	} else {
		console.error("Extension Data Parse Failure", parsedRes.issues)
		throw new Error("Fail to parse extension data")
	}
}

export function createExtensionData(data: {
	extId: number
	dataType: string
	data: string
	searchText?: string
}) {
	return db.insert(schema.extensionData).values(data).run()
}

export function getExtensionDataById(dataId: number, fields?: ExtDataField[]) {
	const _fields = fields ?? []
	const selectQuery: SelectedFields = {
		dataId: schema.extensionData.dataId,
		extId: schema.extensionData.extId,
		dataType: schema.extensionData.dataType,
		metadata: schema.extensionData.metadata,
		createdAt: schema.extensionData.createdAt,
		updatedAt: schema.extensionData.updatedAt
		// data: schema.extensionData.data,
		// searchText: schema.extensionData.searchText
	}
	if (_fields.includes("data")) {
		selectQuery["data"] = schema.extensionData.data
	}
	if (_fields.includes("search_text")) {
		selectQuery["searchText"] = schema.extensionData.searchText
	}
	return db
		.select(selectQuery)
		.from(schema.extensionData)
		.where(orm.eq(schema.extensionData.dataId, dataId))
		.get()
		.then((rawData) => {
			console.log("Raw Data", rawData)
			// @ts-expect-error - rawData is unknown, but will be safe parsed with valibot
			return convertRawExtDataToExtData(rawData)
		})
}

export async function searchExtensionData(searchParams: {
	extId: number
	searchMode: SearchMode
	dataId?: number
	dataType?: string
	searchText?: string
	afterCreatedAt?: string
	beforeCreatedAt?: string
	limit?: number
	offset?: number
	orderByCreatedAt?: SQLSortOrder
	orderByUpdatedAt?: SQLSortOrder
	fields?: ExtDataField[]
}): Promise<ExtData[]> {
	const fields = v.parse(v.optional(v.array(ExtDataField), []), searchParams.fields)
	const _fields = fields ?? []
	
	// Build the select query based on fields
	const selectQuery: SelectedFields = {
		dataId: schema.extensionData.dataId,
		extId: schema.extensionData.extId,
		dataType: schema.extensionData.dataType,
		createdAt: schema.extensionData.createdAt,
		updatedAt: schema.extensionData.updatedAt
	}

	if (_fields.includes("data")) {
		selectQuery["data"] = schema.extensionData.data
	}
	if (_fields.includes("search_text")) {
		selectQuery["searchText"] = schema.extensionData.searchText
	}

	// Build the query
	const query = db.select(selectQuery).from(schema.extensionData)

	// Add conditions
	const conditions = [orm.eq(schema.extensionData.extId, searchParams.extId)]

	if (searchParams.dataId) {
		conditions.push(orm.eq(schema.extensionData.dataId, searchParams.dataId))
	}

	if (searchParams.dataType) {
		conditions.push(orm.eq(schema.extensionData.dataType, searchParams.dataType))
	}

	if (searchParams.searchText) {
		switch (searchParams.searchMode) {
			case SearchModeEnum.ExactMatch:
				conditions.push(orm.eq(schema.extensionData.searchText, searchParams.searchText))
				break
			case SearchModeEnum.Like:
				conditions.push(orm.like(schema.extensionData.searchText, `%${searchParams.searchText}%`))
				break
			case SearchModeEnum.FTS:
				// For FTS, we need to use a raw SQL query since Drizzle doesn't support MATCH directly
				conditions.push(orm.sql`${schema.extensionDataFts.searchText} MATCH ${searchParams.searchText}`)
				break
		}
	}

	if (searchParams.afterCreatedAt) {
		conditions.push(orm.gt(schema.extensionData.createdAt, searchParams.afterCreatedAt))
	}

	if (searchParams.beforeCreatedAt) {
		conditions.push(orm.lt(schema.extensionData.createdAt, searchParams.beforeCreatedAt))
	}

	// Add ordering
	if (searchParams.orderByCreatedAt) {
		query.orderBy(
			searchParams.orderByCreatedAt === SQLSortOrderEnum.Asc
				? orm.asc(schema.extensionData.createdAt)
				: orm.desc(schema.extensionData.createdAt)
		)
	}

	if (searchParams.orderByUpdatedAt) {
		query.orderBy(
			searchParams.orderByUpdatedAt === SQLSortOrderEnum.Asc
				? orm.asc(schema.extensionData.updatedAt)
				: orm.desc(schema.extensionData.updatedAt)
		)
	}

	// Add limit and offset
	if (searchParams.limit) {
		query.limit(searchParams.limit)
	}

	if (searchParams.offset) {
		query.offset(searchParams.offset)
	}

	// Execute query and convert results
	const results = await query.where(orm.and(...conditions)).all()
	return results.map((rawData) => {
		// @ts-expect-error - rawData is unknown, but will be safe parsed with valibot
		return convertRawExtDataToExtData(rawData)
	}).filter((item): item is ExtData => item !== undefined)
}

// export async function getNCommands(n: number):
// export function createExtension(ext: {
// 	identifier: string
// 	version: string
// 	enabled?: boolean
// 	path?: string
// 	data?: any
// }) {
// 	return invoke<void>(generateJarvisPluginCommand("create_extension"), ext)
// }