import chalk from "chalk";
import { select } from "@inquirer/prompts";
import dbHandler from "../../lib/db-handler";
export default async function showFields({ tableName, }) {
    const columns = (await dbHandler({
        query: `SELECT ORDINAL_POSITION, COLUMN_NAME, COLUMN_TYPE, IS_NULLABLE, COLUMN_DEFAULT, COLUMN_KEY, EXTRA, COLUMN_COMMENT FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = ? ORDER BY ORDINAL_POSITION`,
        values: [tableName],
    })).payload;
    if (!columns?.length) {
        console.log(chalk.yellow(`\nNo columns found for "${tableName}".\n`));
        return;
    }
    const indexes = (await dbHandler({
        query: `SELECT INDEX_NAME, COLUMN_NAME, NON_UNIQUE, INDEX_TYPE FROM information_schema.STATISTICS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = ? ORDER BY INDEX_NAME, SEQ_IN_INDEX`,
        values: [tableName],
    })).payload;
    const foreignKeys = (await dbHandler({
        query: `SELECT CONSTRAINT_NAME, COLUMN_NAME, REFERENCED_TABLE_NAME, REFERENCED_COLUMN_NAME FROM information_schema.KEY_COLUMN_USAGE WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = ? AND REFERENCED_TABLE_NAME IS NOT NULL`,
        values: [tableName],
    })).payload;
    while (true) {
        const fieldName = await select({
            message: `"${tableName}" — select a field:`,
            choices: [
                ...columns.map((c) => ({
                    name: c.COLUMN_NAME,
                    value: c.COLUMN_NAME,
                })),
                { name: chalk.dim("← Go Back"), value: "__back__" },
                { name: chalk.dim("✕ Exit"), value: "__exit__" },
            ],
        });
        if (fieldName === "__back__")
            break;
        if (fieldName === "__exit__")
            return "__exit__";
        const col = columns.find((c) => c.COLUMN_NAME === fieldName);
        const colIndexes = indexes?.filter((i) => i.COLUMN_NAME === fieldName) || [];
        const fk = foreignKeys?.find((f) => f.COLUMN_NAME === fieldName);
        console.log(`\n${chalk.bold(`Field: "${fieldName}"`)}\n`);
        console.log(`  ${chalk.dim("Table")}        ${tableName}`);
        console.log(`  ${chalk.dim("Column #")}     ${col.ORDINAL_POSITION}`);
        console.log(`  ${chalk.dim("Type")}         ${col.COLUMN_TYPE}`);
        console.log(`  ${chalk.dim("Primary Key")}  ${col.COLUMN_KEY === "PRI" ? chalk.green("YES") : "NO"}`);
        console.log(`  ${chalk.dim("Not Null")}     ${col.IS_NULLABLE === "NO" ? chalk.yellow("YES") : "NO"}`);
        console.log(`  ${chalk.dim("Default")}      ${col.COLUMN_DEFAULT ?? chalk.italic("(none)")}`);
        console.log(`  ${chalk.dim("Extra")}        ${col.EXTRA || chalk.italic("(none)")}`);
        console.log(`  ${chalk.dim("Indexed")}      ${colIndexes.length ? chalk.cyan(colIndexes.map((i) => i.INDEX_NAME).join(", ")) : "NO"}`);
        if (fk) {
            console.log(`  ${chalk.dim("Foreign Key")}  ${chalk.magenta(`${fk.REFERENCED_TABLE_NAME}(${fk.REFERENCED_COLUMN_NAME})`)}`);
        }
        else {
            console.log(`  ${chalk.dim("Foreign Key")}  NO`);
        }
        if (col.COLUMN_COMMENT) {
            console.log(`  ${chalk.dim("Comment")}      ${col.COLUMN_COMMENT}`);
        }
        console.log();
    }
}