use super::rules::Rule;
use crate::error::{PakkerError, Result};

pub trait ExportProfile {
  fn name(&self) -> &str;
  fn rules(&self) -> Vec<Box<dyn Rule>>;
}

/// Implements [`ExportProfile`] for a unit struct with a static name and rule
/// list.
///
/// Each rule entry is an expression evaluated as
/// `Box::new(super::rules::<expr>)`, supporting both bare unit struct names and
/// constructor calls with arguments.
///
/// # Example
///
/// ```ignore
/// export_profile! {
///     MyProfile => "my-profile" {
///         SomeRule,
///         AnotherRule::new("arg"),
///     }
/// }
/// ```
macro_rules! export_profile {
  ($struct:ident => $name:literal { $($rule:expr),* $(,)? }) => {
    pub struct $struct;

    impl ExportProfile for $struct {
      fn name(&self) -> &'static str {
        $name
      }

      fn rules(&self) -> Vec<Box<dyn Rule>> {
        use super::rules::*;
        vec![
          $(Box::new($rule)),*
        ]
      }
    }
  };
}

export_profile! {
  CurseForgeProfile => "curseforge" {
    CopyProjectFilesRule,
    FilterByPlatformRule,
    MissingProjectsAsOverridesRule::new("curseforge"),
    CopyOverridesRule,
    CopyClientOverridesRule,
    FilterServerOnlyRule,
    GenerateManifestRule::curseforge(),
    FilterNonRedistributableRule,
    TextReplacementRule
  }
}

export_profile! {
  ModrinthProfile => "modrinth" {
    CopyProjectFilesRule,
    FilterByPlatformRule,
    MissingProjectsAsOverridesRule::new("modrinth"),
    CopyOverridesRule,
    CopyClientOverridesRule,
    FilterServerOnlyRule,
    GenerateManifestRule::modrinth(),
    TextReplacementRule
  }
}

export_profile! {
  ServerPackProfile => "serverpack" {
    CopyProjectFilesRule,
    CopyServerOverridesRule,
    FilterClientOnlyRule,
    TextReplacementRule
  }
}

pub fn create_profile(name: &str) -> Result<Box<dyn ExportProfile>> {
  match name {
    "curseforge" => Ok(Box::new(CurseForgeProfile)),
    "modrinth" => Ok(Box::new(ModrinthProfile)),
    "serverpack" => Ok(Box::new(ServerPackProfile)),
    _ => Err(PakkerError::InvalidExportProfile(name.to_string())),
  }
}