import Fastify from "fastify";
import cors from "@fastify/cors";
import sequelizePlugin from "./plugins/sequelize.js";
import dotenv from "dotenv";
import cors from "@fastify/cors";
import { executeQueryAsync, retrieveResultsAsync } from "./services/athena.js";
dotenv.config();
import * as dashboard from "./queries/dashboard.js";
import * as queries from "./queries/queries.js";
import * as dashboardQueries from "./queries/dashboard.js";

const server = Fastify({ logger: true });
await server.register(cors, {
    origin: "*",  
});
server.register(sequelizePlugin);

await server.register(cors, {
    origin: "*",  
});
// await server.register(cors, {
//     origin: ["http://localhost:3000"],
// });
server.get("/", async (request, reply) => {
    const [results, metadata] = await server.sequelize.query('SELECT 1 + 2 AS result');
    console.log(results);
    console.log(metadata);
    return { hello: "world" };
});

server.get("/accounts", async (request, reply) => {
    const queryExecutionId = await executeQueryAsync(queries.accountsQuery);
    const results = await retrieveResultsAsync(queryExecutionId);
    return results;
});

server.get("/accounts/:accountId/regions", async (request, reply) => {
    const query = queries.regionsQuery.replace('%accountId%', request.params.accountId);
    const queryExecutionId = await executeQueryAsync(query);
    const results = await retrieveResultsAsync(queryExecutionId);
    return results;
});

server.get("/accounts/:accountId/regions/:regionCode/products", async (request, reply) => {
    let regionCode = request.params.regionCode;
    if (!regionCode || regionCode === 'global') {
        regionCode = '';
    }
    const query = queries.productsByRegionQuery
        .replace('%accountId%', request.params.accountId)
        .replace('%regionCode%', regionCode);
    const queryExecutionId = await executeQueryAsync(query);
    const results = await retrieveResultsAsync(queryExecutionId);
    return results;
});

server.get("/accounts/:accountId/regions/:regionCode/products/:productCode", async (request, reply) => {
    let regionCode = request.params.regionCode;
    if (!regionCode || regionCode === 'global') {
        regionCode = '';
    }
    const query = queries.productByRegionQuery
        .replace('%accountId%', request.params.accountId)
        .replace('%regionCode%', regionCode)
        .replace('%productCode%', request.params.productCode);
    const queryExecutionId = await executeQueryAsync(query);
    const results = await retrieveResultsAsync(queryExecutionId);
    return results;
});

server.get("/accounts/:accountId/regions/:regionCode/products/:productCode/usage", async (request, reply) => {
    let regionCode = request.params.regionCode;
    if (!regionCode || regionCode === 'global') {
        regionCode = '';
    }
    const query = queries.productUsageByRegionQuery
        .replace('%accountId%', request.params.accountId)
        .replace('%regionCode%', regionCode)
        .replace('%productCode%', request.params.productCode);
    const queryExecutionId = await executeQueryAsync(query);
    const results = await retrieveResultsAsync(queryExecutionId);
    return results;
});

server.get("/accounts/:accountId/regions/:regionCode/products/:productCode/usage/:year", async (request, reply) => {
    let regionCode = request.params.regionCode;
    if (!regionCode || regionCode === 'global') {
        regionCode = '';
    }
    const query = queries.productUsageByRegionYearQuery
        .replace('%accountId%', request.params.accountId)
        .replace('%regionCode%', regionCode)
        .replace('%productCode%', request.params.productCode)
        .replace('%year%', request.params.year);
    const queryExecutionId = await executeQueryAsync(query);
    const results = await retrieveResultsAsync(queryExecutionId);
    return results;
});

server.get("/accounts/:accountId/regions/:regionCode/products/:productCode/usage/:year/:month", async (request, reply) => {
    let regionCode = request.params.regionCode;
    if (!regionCode || regionCode === 'global') {
        regionCode = '';
    }
    const query = queries.productUsageByRegionYearMonthQuery
        .replace('%accountId%', request.params.accountId)
        .replace('%regionCode%', regionCode)
        .replace('%productCode%', request.params.productCode)
        .replace('%year%', request.params.year)
        .replace('%month%', request.params.month);
    const queryExecutionId = await executeQueryAsync(query);
    const results = await retrieveResultsAsync(queryExecutionId);
    return results;
});

server.get("/products", async (request, reply) => {
    const query = queries.productQuery;
    const queryExecutionId = await executeQueryAsync(query);
    const results = await retrieveResultsAsync(queryExecutionId);
    return results;
});

server.get("/products/:productCode", async (request, reply) => {
    const query = queries.productByCodeQuery
        .replace('%productCode%', request.params.productCode);
    const queryExecutionId = await executeQueryAsync(query);
    const results = await retrieveResultsAsync(queryExecutionId);
    return results;
});

server.get("/products/:productCode/usage", async (request, reply) => {
    const query = queries.productByCodeUsageQuery
        .replace('%productCode%', request.params.productCode);
    const queryExecutionId = await executeQueryAsync(query);
    const results = await retrieveResultsAsync(queryExecutionId);
    return results;
});

server.get("/products/:productCode/usage/:year", async (request, reply) => {
    const query = queries.productByCodeUsageYearQuery
        .replace('%productCode%', request.params.productCode)
        .replace('%year%', request.params.year);
    const queryExecutionId = await executeQueryAsync(query);
    const results = await retrieveResultsAsync(queryExecutionId);
    return results;
});

server.get("/products/:productCode/usage/:year/:month", async (request, reply) => {
    const query = queries.productByCodeUsageYearMonthQuery
        .replace('%productCode%', request.params.productCode)
        .replace('%year%', request.params.year)
        .replace('%month%', request.params.month);
    const queryExecutionId = await executeQueryAsync(query);
    const results = await retrieveResultsAsync(queryExecutionId);
    return results;
});

server.get("/invoices", async (request, reply) => {
    const query = queries.invoices;
    const queryExecutionId = await executeQueryAsync(query);
    const results = await retrieveResultsAsync(queryExecutionId);
    return results;
});

server.get("/invoices/:invoiceId", async (request, reply) => {
    const query = queries.invoiceById
        .replace('%invoiceId%', request.params.invoiceId);
    const queryExecutionId = await executeQueryAsync(query);
    const results = await retrieveResultsAsync(queryExecutionId);
    return results;
});

server.get("/invoices/:invoiceId/products", async (request, reply) => {
    const query = queries.invoiceByIdProducts
        .replace('%invoiceId%', request.params.invoiceId);
    const queryExecutionId = await executeQueryAsync(query);
    const results = await retrieveResultsAsync(queryExecutionId);
    return results;
});

server.get("/invoices/:invoiceId/products/:productCode", async (request, reply) => {
    const query = queries.invoiceByProductCode
        .replace('%invoiceId%', request.params.invoiceId)
        .replace('%productCode%', request.params.productCode);
    const queryExecutionId = await executeQueryAsync(query);
    const results = await retrieveResultsAsync(queryExecutionId);
    return results;
});

server.get("/invoices/:invoiceId/products/:productCode/usage", async (request, reply) => {
    const query = queries.invoiceByProductCodeUsage
        .replace('%invoiceId%', request.params.invoiceId)
        .replace('%productCode%', request.params.productCode);
    const queryExecutionId = await executeQueryAsync(query);
    const results = await retrieveResultsAsync(queryExecutionId);
    return results;
});

server.get("/invoices/:invoiceId/accounts", async (request, reply) => {
    const query = queries.invoiceByIdAccounts
        .replace('%invoiceId%', request.params.invoiceId);
    const queryExecutionId = await executeQueryAsync(query);
    const results = await retrieveResultsAsync(queryExecutionId);
    return results;
});

server.get("/invoices/:invoiceId/accounts/:accountId", async (request, reply) => {
    const query = queries.invoiceByIdAccount
        .replace('%invoiceId%', request.params.invoiceId)
        .replace('%accountId%', request.params.accountId);
    const queryExecutionId = await executeQueryAsync(query);
    const results = await retrieveResultsAsync(queryExecutionId);
    return results;
});

server.get("/invoices/:invoiceId/accounts/:accountId/products/:productCode", async (request, reply) => {
    const query = queries.invoiceByIdAccountProducts
        .replace('%invoiceId%', request.params.invoiceId)
        .replace('%accountId%', request.params.accountId)
        .replace('%productCode%', request.params.productCode);
    const queryExecutionId = await executeQueryAsync(query);
    const results = await retrieveResultsAsync(queryExecutionId);
    return results;
});

server.get("/invoices/:invoiceId/accounts/:accountId/products/:productCode/usage", async (request, reply) => {
    const query = queries.invoiceByIdAccountProductsUsage
        .replace('%invoiceId%', request.params.invoiceId)
        .replace('%accountId%', request.params.accountId)
        .replace('%productCode%', request.params.productCode);
    const queryExecutionId = await executeQueryAsync(query);
    const results = await retrieveResultsAsync(queryExecutionId);
    return results;
});

server.get("/accounts/:accountId/regions/:regionCode/products/:productCode/resources/:resourceId/usage", async (request, reply) => {
    let regionCode = request.params.regionCode;
    if (!regionCode || regionCode === 'global') {
        regionCode = 'global';
    }

    const query = dashboard.productResourceUsageQuery
        .replace('%accountId%', request.params.accountId)
        .replace('%regionCode%', regionCode)
        .replace('%productCode%', request.params.productCode)
        .replace('%resourceId%', request.params.resourceId);

    try {
        const queryExecutionId = await executeQueryAsync(query);
        const results = await retrieveResultsAsync(queryExecutionId);
        return results ?? [];  
    } catch (err) {
        request.log.error(err);
        return reply.status(500).send({
            error: 'Failed to fetch resource usage',
            details: err.message,
        });
    }
});

server.get("/products/usage", async (request, reply) => {
    const query = dashboard.allProductUsageQuery;
    const queryExecutionId = await executeQueryAsync(query);
    const results = await retrieveResultsAsync(queryExecutionId);
    return results;
});

server.get("/accounts/cost-usage-summary", async (request, reply) => {
    const query = dashboard.accountCostUsageSummaryQuery;
    const queryExecutionId = await executeQueryAsync(query);
    const results = await retrieveResultsAsync(queryExecutionId);
    return results;
});



server.get("/dashboard/summary", async (request, reply) => {
    const [currentQueryId, previousQueryId] = await Promise.all([
        executeQueryAsync(dashboardQueries.currentMonthSummary),
        executeQueryAsync(dashboardQueries.previousMonthSummary)
    ]);
    const [currentResults, previousResults] = await Promise.all([
        retrieveResultsAsync(currentQueryId),
        retrieveResultsAsync(previousQueryId)
    ]);
    return {
        current: currentResults[0] || {},
        previous: previousResults[0] || {}
    };
});

server.get("/dashboard/services", async (request, reply) => {
    const queryExecutionId = await executeQueryAsync(dashboardQueries.serviceBreakdown);
    const results = await retrieveResultsAsync(queryExecutionId);
    return results;
});

server.get("/dashboard/trends", async (request, reply) => {
    const queryExecutionId = await executeQueryAsync(dashboardQueries.dailyTrends);
    const results = await retrieveResultsAsync(queryExecutionId);
    return results;
});

server.get("/dashboard/accounts", async (request, reply) => {
    const queryExecutionId = await executeQueryAsync(dashboardQueries.topAccounts);
    const results = await retrieveResultsAsync(queryExecutionId);
    return results;
});

server.get("/dashboard/today", async (request, reply) => {
    const queryExecutionId = await executeQueryAsync(dashboardQueries.todaySpending);
    const results = await retrieveResultsAsync(queryExecutionId);
    return results[0] || {};
});

server.get("/dashboard/weekly", async (request, reply) => {
    const queryExecutionId = await executeQueryAsync(dashboardQueries.weeklyComparison);
    const results = await retrieveResultsAsync(queryExecutionId);
    return results;
});

server.get("/dashboard/services/:serviceCode/accounts", async (request, reply) => {
    const { days = 30 } = request.query;
    const query = dashboardQueries.serviceAccountBreakdown
        .replace('%serviceCode%', request.params.serviceCode)
        .replace('%days%', days);
    const queryExecutionId = await executeQueryAsync(query);
    const results = await retrieveResultsAsync(queryExecutionId);
    return {
        serviceCode: request.params.serviceCode,
        accounts: results,
        totalCost: results.reduce((sum, account) => sum + parseFloat(account.totalCost || 0), 0).toFixed(2)
    };
});

server.get("/dashboard/services/:serviceCode/trends", async (request, reply) => {
    const { days = 30 } = request.query;
    const query = dashboardQueries.serviceTrends
        .replace('%serviceCode%', request.params.serviceCode)
        .replace('%days%', days);
    const queryExecutionId = await executeQueryAsync(query);
    const results = await retrieveResultsAsync(queryExecutionId);
    return {
        serviceCode: request.params.serviceCode,
        trends: results,
        totalCost: results.reduce((sum, day) => sum + parseFloat(day.dailyCost || 0), 0).toFixed(2)
    };
});

// Account drill-down routes
server.get("/dashboard/accounts/:accountId/services", async (request, reply) => {
    const { days = 30 } = request.query;
    const query = dashboardQueries.accountServiceBreakdown
        .replace('%accountId%', request.params.accountId)
        .replace('%days%', days);
    const queryExecutionId = await executeQueryAsync(query);
    const results = await retrieveResultsAsync(queryExecutionId);
    return {
        accountId: request.params.accountId,
        services: results,
        totalCost: results.reduce((sum, service) => sum + parseFloat(service.totalCost || 0), 0).toFixed(2)
    };
});

server.get("/dashboard/accounts/:accountId/trends", async (request, reply) => {
    const { days = 30 } = request.query;
    const query = dashboardQueries.accountTrends
        .replace('%accountId%', request.params.accountId)
        .replace('%days%', days);
    const queryExecutionId = await executeQueryAsync(query);
    const results = await retrieveResultsAsync(queryExecutionId);
    return {
        accountId: request.params.accountId,
        trends: results,
        totalCost: results.reduce((sum, day) => sum + parseFloat(day.dailyCost || 0), 0).toFixed(2)
    };
});


try {
    await server.listen({ port: 3000 })
} catch (err) {
    server.log.error(err);
    process.exit(1);
}