import CliDoc

extension CliDoc.Discussion {
  static func playbook(
    examples: [(label: String, example: String)]
  ) -> Self {
    .init {
      Section {
        Note.mostOptionsNotRequired
        Examples(examples: examples)
        SeeAlso(label: "Ansible playbook options.", command: "ansible-playbook --help")
        ImportantNote.passingExtraArgs
      }
      .labeledContentStyle(.custom("foo:"))
    }
  }
}

extension ShellCommand {
  static func hpaCommand(_ command: String) -> Self {
    .init(command: "\(Constants.appName) \(command)")
  }
}

struct SeeAlso: NodeRepresentable {

  let node: any NodeRepresentable

  init(label: String, command: String) {
    self.node = Group(separator: "\n") {
      Note("SEE ALSO:") {
        label
      }
      ShellCommand(command: command)
    }
  }

  func render() -> String {
    node.render()
  }

}

struct Examples: NodeRepresentable {
  typealias Example = (label: String, example: String)
  let examples: [Example]

  func render() -> String {
    Group(separator: "\n") {
      Note("EXAMPLES:") { "Common usage examples." }
      for (label, command) in examples {
        LabeledContent("\t\(label.green.bold)", separator: "\n") {
          ShellCommand.hpaCommand(command)
        }
      }
      if let first = examples.first {
        LabeledContent("\n\tPassing extra options.".green.bold, separator: "\n") {
          ShellCommand.hpaCommand("\(first.example) -- --vault-id \"myId@$SCRIPTS/vault-gopass-client\"")
        }
      }
    }.render()
  }
}

struct Note: NodeRepresentable {

  let node: any NodeRepresentable

  init(
    _ label: String = "NOTE:",
    @NodeBuilder _ content: () -> any NodeRepresentable
  ) {
    self.node = LabeledContent(
      separator: " ",
      label: { label.yellow.bold },
      content: { content().style(.italic) }
    )
  }

  func render() -> String {
    node.render()
  }

  static var mostOptionsNotRequired: Self {
    .init {
      "Most options are not required if you have a configuration file setup."
    }
  }
}

// TODO: Fix the text.
struct ImportantNote: NodeRepresentable {

  let node: any NodeRepresentable

  init(
    _ label: String = "IMPORTANT NOTE:",
    @NodeBuilder _ content: () -> any NodeRepresentable
  ) {
    self.node = LabeledContent(
      separator: "\n",
      label: { label.red.bold.underline },
      content: { content().style(.italic) }
    )
  }

  func render() -> String {
    node.render()
  }

  static var passingExtraArgs: Self {
    .init {
      """
      Any extra options passed to the underlying command need to come after
      `--` otherwise an "Unknown option" error will occur. See above example of passing
      extra options.
      """
    }
  }
}