import { readFileSync, existsSync } from "fs"
import { join } from "path"
export interface ChannelDetectionResult {
isBeta: boolean
isCanary: boolean
currentVersion: string | null
}
/**
* Detects the Next.js channel (beta/canary/stable) from a project's package.json
* @param projectPath - Path to the Next.js project directory
* @returns Channel detection result with isBeta, isCanary, and currentVersion
*/
export function detectProjectChannel(projectPath: string): ChannelDetectionResult {
const packageJsonPath = join(projectPath, "package.json")
if (!existsSync(packageJsonPath)) {
return { isBeta: false, isCanary: false, currentVersion: null }
}
try {
const packageJson = JSON.parse(readFileSync(packageJsonPath, "utf-8"))
const nextVersion = packageJson.dependencies?.next || packageJson.devDependencies?.next
if (!nextVersion) {
return { isBeta: false, isCanary: false, currentVersion: null }
}
const isBeta = nextVersion.includes("beta") || nextVersion.includes("16.0.0-beta")
const isCanary = nextVersion === "canary" || nextVersion.includes("canary")
return { isBeta, isCanary, currentVersion: nextVersion }
} catch (error) {
console.warn("Failed to parse package.json, assuming not on beta/canary")
return { isBeta: false, isCanary: false, currentVersion: null }
}
}
/**
* Processes conditional template blocks based on channel detection
* Supports {{IF_BETA_CHANNEL}} blocks
* @param template - Template string with conditional blocks
* @param isBeta - Whether the project is on beta channel
* @returns Processed template with conditional blocks resolved
*/
export function processConditionalBlocks(template: string, isBeta: boolean): string {
let result = template
// Process IF_BETA_CHANNEL blocks
if (isBeta) {
// Keep content, remove markers
result = result.replace(/\{\{IF_BETA_CHANNEL\}\}/g, "")
result = result.replace(/\{\{\/IF_BETA_CHANNEL\}\}/g, "")
} else {
// Remove entire block including content
result = result.replace(/\{\{IF_BETA_CHANNEL\}\}.*?\{\{\/IF_BETA_CHANNEL\}\}/gs, "")
}
return result
}
