import Foundation


let args = CommandLine.arguments

guard args.count == 2 else {
    print("Invalid argument list")
    print("Usage: generator config-path")
    exit(1)
}

let configuration: Configuration
do {
    let configUrl = URL(fileURLWithPath: args[1])
    let data = try Data(contentsOf: configUrl)
    configuration = try JSONDecoder().decode(from: data)
} catch {
    print("Failed to read configuration: \(error)")
    exit(1)
}

let log = ValidationLog()
let files = FileSystem(
    in: configuration.contentDirectory,
    to: configuration.outputDirectory)

guard let siteData = Element(atRoot: configuration.contentDirectory) else {
    exit(0)
}

do {
    let siteGenerator = try SiteGenerator()
    siteGenerator.generate(site: siteData)
} catch {
    print("Failed to generate website: \(error)")
    exit(2)
}

files.printGeneratedPages()
files.printEmptyPages()
files.printDraftPages()

files.createImages()
print("Images generated")
files.copyRequiredFiles()
files.printExternalFiles()
files.writeHashes()