import { promises as fs } from "fs";
import { bold, cyan, white } from "../picocolors";
import * as CommentJson from "next/dist/compiled/comment-json";
import semver from "next/dist/compiled/semver";
import os from "os";
import { getTypeScriptConfiguration } from "./getTypeScriptConfiguration";
import * as Log from "../../build/output/log";
function getDesiredCompilerOptions(ts, tsOptions) {
    const o = {
        // These are suggested values and will be set when not present in the
        // tsconfig.json
        lib: {
            suggested: [
                "dom",
                "dom.iterable",
                "esnext"
            ]
        },
        allowJs: {
            suggested: true
        },
        skipLibCheck: {
            suggested: true
        },
        strict: {
            suggested: false
        },
        ...semver.lt(ts.version, "5.0.0") ? {
            forceConsistentCasingInFileNames: {
                suggested: true
            }
        } : undefined,
        noEmit: {
            suggested: true
        },
        ...semver.gte(ts.version, "4.4.2") ? {
            incremental: {
                suggested: true
            }
        } : undefined,
        // These values are required and cannot be changed by the user
        // Keep this in sync with the webpack config
        // 'parsedValue' matches the output value from ts.parseJsonConfigFileContent()
        module: {
            parsedValue: ts.ModuleKind.ESNext,
            // All of these values work:
            parsedValues: [
                semver.gte(ts.version, "5.4.0") && ts.ModuleKind.Preserve,
                ts.ModuleKind.ES2020,
                ts.ModuleKind.ESNext,
                ts.ModuleKind.CommonJS,
                ts.ModuleKind.AMD,
                ts.ModuleKind.NodeNext,
                ts.ModuleKind.Node16
            ],
            value: "esnext",
            reason: "for dynamic import() support"
        },
        // TODO: Semver check not needed once Next.js repo uses 5.4.
        ...semver.gte(ts.version, "5.4.0") && (tsOptions == null ? void 0 : tsOptions.module) === ts.ModuleKind.Preserve ? {
        } : {
            esModuleInterop: {
                value: true,
                reason: "requirement for SWC / babel"
            },
            moduleResolution: {
                // In TypeScript 5.0, `NodeJs` has renamed to `Node10`
                parsedValue: ts.ModuleResolutionKind.Bundler ?? ts.ModuleResolutionKind.NodeNext ?? ts.ModuleResolutionKind.Node10 ?? ts.ModuleResolutionKind.NodeJs,
                // All of these values work:
                parsedValues: [
                    ts.ModuleResolutionKind.Node10 ?? ts.ModuleResolutionKind.NodeJs,
                    // only newer TypeScript versions have this field, it
                    // will be filtered for new versions of TypeScript
                    ts.ModuleResolutionKind.Node12,
                    ts.ModuleResolutionKind.Node16,
                    ts.ModuleResolutionKind.NodeNext,
                    ts.ModuleResolutionKind.Bundler
                ].filter((val)=>typeof val !== "undefined"),
                value: "node",
                reason: "to match webpack resolution"
            },
            resolveJsonModule: {
                value: true,
                reason: "to match webpack resolution"
            }
        },
        ...(tsOptions == null ? void 0 : tsOptions.verbatimModuleSyntax) === true ? undefined : {
            isolatedModules: {
                value: true,
                reason: "requirement for SWC / Babel"
            }
        },
        jsx: {
            parsedValue: ts.JsxEmit.Preserve,
            value: "preserve",
            reason: "next.js implements its own optimized jsx transform"
        }
    };
    return o;
}
export function getRequiredConfiguration(ts) {
    const res = {};
    const desiredCompilerOptions = getDesiredCompilerOptions(ts);
    for (const optionKey of Object.keys(desiredCompilerOptions)){
        const ev = desiredCompilerOptions[optionKey];
        if (!("value" in ev)) {
            continue;
        }
        res[optionKey] = ev.parsedValue ?? ev.value;
    }
    return res;
}
export async function writeConfigurationDefaults(ts, tsConfigPath, isFirstTimeSetup, hasAppDir, distDir, hasPagesDir) {
    if (isFirstTimeSetup) {
        await fs.writeFile(tsConfigPath, "{}" + os.EOL);
    }
    const { options: tsOptions, raw: rawConfig } = await getTypeScriptConfiguration(ts, tsConfigPath, true);
    const userTsConfigContent = await fs.readFile(tsConfigPath, {
        encoding: "utf8"
    });
    const userTsConfig = CommentJson.parse(userTsConfigContent);
    if (userTsConfig.compilerOptions == null && !("extends" in rawConfig)) {
        userTsConfig.compilerOptions = {};
        isFirstTimeSetup = true;
    }
    const desiredCompilerOptions = getDesiredCompilerOptions(ts, tsOptions);
    const suggestedActions = [];
    const requiredActions = [];
    for (const optionKey of Object.keys(desiredCompilerOptions)){
        const check = desiredCompilerOptions[optionKey];
        if ("suggested" in check) {
            if (!(optionKey in tsOptions)) {
                if (!userTsConfig.compilerOptions) {
                    userTsConfig.compilerOptions = {};
                }
                userTsConfig.compilerOptions[optionKey] = check.suggested;
                suggestedActions.push(cyan(optionKey) + " was set to " + bold(check.suggested));
            }
        } else if ("value" in check) {
            var _check_parsedValues;
            const ev = tsOptions[optionKey];
            if (!("parsedValues" in check ? (_check_parsedValues = check.parsedValues) == null ? void 0 : _check_parsedValues.includes(ev) : "parsedValue" in check ? check.parsedValue === ev : check.value === ev)) {
                if (!userTsConfig.compilerOptions) {
                    userTsConfig.compilerOptions = {};
                }
                userTsConfig.compilerOptions[optionKey] = check.value;
                requiredActions.push(cyan(optionKey) + " was set to " + bold(check.value) + ` (${check.reason})`);
            }
        } else {
            // eslint-disable-next-line @typescript-eslint/no-unused-vars
            const _ = check;
        }
    }
    const nextAppTypes = `${distDir}/types/**/*.ts`;
    if (!("include" in rawConfig)) {
        userTsConfig.include = hasAppDir ? [
            "next-env.d.ts",
            nextAppTypes,
            "**/*.ts",
            "**/*.tsx"
        ] : [
            "next-env.d.ts",
            "**/*.ts",
            "**/*.tsx"
        ];
        suggestedActions.push(cyan("include") + " was set to " + bold(hasAppDir ? `['next-env.d.ts', '${nextAppTypes}', '**/*.ts', '**/*.tsx']` : `['next-env.d.ts', '**/*.ts', '**/*.tsx']`));
    } else if (hasAppDir && !rawConfig.include.includes(nextAppTypes)) {
        userTsConfig.include.push(nextAppTypes);
        suggestedActions.push(cyan("include") + " was updated to add " + bold(`'${nextAppTypes}'`));
    }
    // Enable the Next.js typescript plugin.
    if (hasAppDir) {
        // Check if the config or the resolved config has the plugin already.
        const plugins = [
            ...Array.isArray(tsOptions.plugins) ? tsOptions.plugins : [],
            ...userTsConfig.compilerOptions && Array.isArray(userTsConfig.compilerOptions.plugins) ? userTsConfig.compilerOptions.plugins : []
        ];
        const hasNextPlugin = plugins.some(({ name })=>name === "next");
        // If the TS config extends on another config, we can't add the `plugin` field
        // because that will override the parent config's plugins.
        // Instead we have to show a message to the user to add the plugin manually.
        if (!userTsConfig.compilerOptions || plugins.length && !hasNextPlugin && "extends" in rawConfig && (!rawConfig.compilerOptions || !rawConfig.compilerOptions.plugins)) {
            Log.info(`\nYour ${bold("tsconfig.json")} extends another configuration, which means we cannot add the Next.js TypeScript plugin automatically. To improve your development experience, we recommend adding the Next.js plugin (\`${cyan('"plugins": [{ "name": "next" }]')}\`) manually to your TypeScript configuration. Learn more: https://nextjs.org/docs/app/building-your-application/configuring/typescript#the-typescript-plugin\n`);
        } else if (!hasNextPlugin) {
            if (!("plugins" in userTsConfig.compilerOptions)) {
                userTsConfig.compilerOptions.plugins = [];
            }
            userTsConfig.compilerOptions.plugins.push({
                name: "next"
            });
            suggestedActions.push(cyan("plugins") + " was updated to add " + bold(`{ name: 'next' }`));
        }
        // If `strict` is set to `false` or `strictNullChecks` is set to `false`,
        // then set `strictNullChecks` to `true`.
        if (hasPagesDir && hasAppDir && userTsConfig.compilerOptions && !userTsConfig.compilerOptions.strict && !("strictNullChecks" in userTsConfig.compilerOptions)) {
            userTsConfig.compilerOptions.strictNullChecks = true;
            suggestedActions.push(cyan("strictNullChecks") + " was set to " + bold(`true`));
        }
    }
    if (!("exclude" in rawConfig)) {
        userTsConfig.exclude = [
            "node_modules"
        ];
        suggestedActions.push(cyan("exclude") + " was set to " + bold(`['node_modules']`));
    }
    if (suggestedActions.length < 1 && requiredActions.length < 1) {
        return;
    }
    await fs.writeFile(tsConfigPath, CommentJson.stringify(userTsConfig, null, 2) + os.EOL);
    Log.info("");
    if (isFirstTimeSetup) {
        Log.info(`We detected TypeScript in your project and created a ${cyan("tsconfig.json")} file for you.`);
        return;
    }
    Log.info(`We detected TypeScript in your project and reconfigured your ${cyan("tsconfig.json")} file for you. Strict-mode is set to ${cyan("false")} by default.`);
    if (suggestedActions.length) {
        Log.info(`The following suggested values were added to your ${cyan("tsconfig.json")}. These values ${cyan("can be changed")} to fit your project's needs:\n`);
        suggestedActions.forEach((action)=>Log.info(`\t- ${action}`));
        Log.info("");
    }
    if (requiredActions.length) {
        Log.info(`The following ${white("mandatory changes")} were made to your ${cyan("tsconfig.json")}:\n`);
        requiredActions.forEach((action)=>Log.info(`\t- ${action}`));
        Log.info("");
    }
}

//# sourceMappingURL=writeConfigurationDefaults.js.map