use std::{fmt::Write, fs, rc::Rc};

use anyhow::Result;
use assert_cmd::prelude::*;
use predicates::{boolean::PredicateBooleanExt, str::contains};
use tempfile::TempDir;

use crate::support::*;

mod support;

#[test]
fn it_checks_a_new_project() -> Result<()> {
    let project = Project::new("foo", true)?;

    project
        .cargo_component(["clippy"])
        .assert()
        .stderr(contains("Checking foo v0.1.0"))
        .success();

    Ok(())
}

#[test]
fn it_finds_errors() -> Result<()> {
    let project = Project::new("foo", true)?;

    let mut src = fs::read_to_string(project.root().join("src/lib.rs"))?;
    write!(&mut src, "\n\nfn foo() -> String {{\n  \"foo\"\n}}\n")?;

    fs::write(project.root().join("src/lib.rs"), src)?;

    project
        .cargo_component(["clippy"])
        .assert()
        .stderr(contains("Checking foo v0.1.0").and(contains("expected `String`, found `&str`")))
        .failure();

    Ok(())
}

#[test]
fn it_finds_clippy_warnings() -> Result<()> {
    let project = Project::new("foo", true)?;

    let mut src = fs::read_to_string(project.root().join("src/lib.rs"))?;
    write!(
        &mut src,
        "\n\nfn foo() -> String {{\n  return \"foo\".to_string();\n}}\n"
    )?;

    fs::write(project.root().join("src/lib.rs"), src)?;

    project
        .cargo_component(["clippy"])
        .assert()
        .stderr(contains("Checking foo v0.1.0").and(contains("clippy::needless_return")))
        .success();

    Ok(())
}

#[test]
fn it_checks_a_workspace() -> Result<()> {
    let dir = Rc::new(TempDir::new()?);
    let root = dir.path().to_owned();
    let project = Project::new_uninitialized(dir, root);

    project.file(
        "baz/Cargo.toml",
        r#"[package]
name = "baz"
version = "0.1.0"
edition = "2021"
    
[dependencies]
"#,
    )?;

    project.file("baz/src/lib.rs", "")?;

    project
        .cargo_component(["new", "--lib", "foo"])
        .assert()
        .stderr(contains("Updated manifest of package `foo`"))
        .success();

    project
        .cargo_component(["new", "--lib", "bar"])
        .assert()
        .stderr(contains("Updated manifest of package `bar`"))
        .success();

    // Add the workspace after all of the packages have been created.
    project.file(
        "Cargo.toml",
        r#"[workspace]
members = ["foo", "bar", "baz"]
"#,
    )?;

    project
        .cargo_component(["clippy"])
        .assert()
        .stderr(contains("Checking foo v0.1.0").and(contains("Checking bar v0.1.0")))
        .success();

    Ok(())
}