import { getPool } from "../db/index.js";
import { marked } from "marked";

async function getAgreementContent(userId, hash) {
    let content = '';
    const client = await getPool();
    try {
        let sql = `
            SELECT markdown
            FROM agreement_content
            WHERE hash = $1
        `;
        let values = [hash];
        if (userId) {
            sql += `AND user_id = $2`;
            values.push(userId);
        } else {
            sql += `AND user_id IS NULL`;
        }
        const res = await client.query(sql, values);
        if (res.rows.length > 0 && res.rows[0].markdown) {
            content = res.rows[0].markdown;
        }
    } catch(e) {
        console.error(e)
    } finally {
        await client.release();
    }
    return content;
}

export async function getAgreements(userId) {
    let agreements = [];
    const client = await getPool();
    try {
        let sql = `
            SELECT
                title,
                hash
            FROM agreement_content
            WHERE user_id IS null
        `;
        let values = [];
        if (userId) {
            sql += `
                OR user_id = $1
            `;
            values.push(userId);
        }
        sql += `
            ORDER BY title ASC
        `
        const res = await client.query(sql, values);
        if (res.rows.length > 0) {
            agreements = res.rows;
        }
    } catch(e) {
        console.error(e)
    } finally {
        await client.release();
    }
    return agreements;
}

export function routeAgreements(app) {

    app.get('/agreements/:hash', async (req, res) => {
        const { hash } = req.params;
        const agreement = await getAgreementContent(null, hash);
        res.render('agreement', {
            agreement: marked(agreement),
            rawUrl: `/agreements/${hash}/raw`,
        });
    });

    app.get('/agreements/:hash/raw', async (req, res) => {
        const { hash } = req.params;
        const agreement = await getAgreementContent(null, hash);
        res.send(`<pre>${agreement}</pre>`);
    });

    app.get('/agreements/:userId/:hash', async (req, res) => {
        const { userId, hash } = req.params;
        const agreement = await getAgreementContent(userId, hash);
        res.render('agreement', {
            agreement: marked(agreement),
            rawUrl: `/agreements/${hash}/raw`,
        });
    });

    app.get('/agreements/:userId/:hash/raw', async (req, res) => {
        const { hash } = req.params;
        const agreement = await getAgreementContent(userId, hash);
        res.send(`<pre>${agreement}</pre>`);
    });
}