use std::process::Command;
use std::{fs, path::PathBuf};

use std::os::unix::fs::PermissionsExt;
use tempfile::TempDir;

struct TestEnv {
    _root: TempDir,
    config_home: PathBuf,
    state_home: PathBuf,
    home: PathBuf,
}

struct CmdResult {
    status: i32,
    output: String,
}

impl TestEnv {
    fn new() -> Self {
        let root = tempfile::tempdir().expect("temp dir");
        let config_home = root.path().join("config");
        let state_home = root.path().join("state");
        let home = root.path().join("home");
        std::fs::create_dir_all(&config_home).expect("config dir");
        std::fs::create_dir_all(&state_home).expect("state dir");
        std::fs::create_dir_all(&home).expect("home dir");
        Self {
            _root: root,
            config_home,
            state_home,
            home,
        }
    }

    fn run(&self, args: &[&str]) -> CmdResult {
        self.run_with_env(args, &[])
    }

    fn run_with_env(&self, args: &[&str], extra_env: &[(&str, &str)]) -> CmdResult {
        let output = Command::new(env!("CARGO_BIN_EXE_gamewrap"))
            .args(args)
            .env("XDG_CONFIG_HOME", &self.config_home)
            .env("XDG_STATE_HOME", &self.state_home)
            .env("HOME", &self.home)
            .env("NO_COLOR", "1")
            .env_remove("SteamAppId")
            .env_remove("SteamGameId")
            .env_remove("STEAM_COMPAT_DATA_PATH")
            .env_remove("STEAM_COMPAT_CLIENT_INSTALL_PATH")
            .envs(extra_env.iter().copied())
            .output()
            .expect("run gamewrap");

        let mut combined = String::new();
        combined.push_str(&String::from_utf8_lossy(&output.stdout));
        combined.push_str(&String::from_utf8_lossy(&output.stderr));

        CmdResult {
            status: output.status.code().unwrap_or(-1),
            output: combined,
        }
    }

    fn path(&self, relative: &str) -> PathBuf {
        self.home.join(relative)
    }

    fn path_with_fake_bins(&self, names: &[&str]) -> String {
        let bin_dir = self.home.join("bin");
        fs::create_dir_all(&bin_dir).expect("fake bin dir");
        for name in names {
            let path = bin_dir.join(name);
            fs::write(&path, "#!/bin/sh\nexit 0\n").expect("write fake bin");
            let mut permissions = fs::metadata(&path)
                .expect("fake bin metadata")
                .permissions();
            permissions.set_mode(0o755);
            fs::set_permissions(&path, permissions).expect("chmod fake bin");
        }

        let current_path = std::env::var_os("PATH").unwrap_or_default();
        format!("{}:{}", bin_dir.display(), current_path.to_string_lossy())
    }
}

fn assert_ok(result: &CmdResult) {
    assert_eq!(result.status, 0, "unexpected failure:\n{}", result.output);
}

fn assert_exit(result: &CmdResult, code: i32) {
    assert_eq!(result.status, code, "unexpected output:\n{}", result.output);
}

#[test]
fn help_and_launch_commands_work() {
    let env = TestEnv::new();

    let result = env.run(&["--version"]);
    assert_ok(&result);
    assert!(result.output.contains(env!("CARGO_PKG_VERSION")));

    let result = env.run(&["--help"]);
    assert_ok(&result);
    assert!(result.output.contains("Commands:"));
    assert!(result.output.contains("profile"));
    assert!(result.output.contains("game"));
    assert!(result.output.contains("last"));
    assert!(result.output.contains("notify"));
    assert!(result.output.contains("completion"));

    let result = env.run(&["help"]);
    assert_ok(&result);
    assert!(result.output.contains("Common tasks:"));
    assert!(result.output.contains("gamewrap %command%"));
    assert!(result.output.contains("gamewrap completion bash"));
    assert!(result.output.contains("gamescope-width"));
    assert!(result.output.contains("profile env set"));
    assert!(result.output.contains("pre-launch"));

    let result = env.run(&[]);
    assert_exit(&result, 2);
    assert!(result.output.contains("No command was provided."));
    assert!(
        result
            .output
            .contains("Steam and terminal usage are different.")
    );

    let result = env.run(&["profils"]);
    assert_exit(&result, 2);
    assert!(result.output.contains("not a known gamewrap command"));
    assert!(
        result
            .output
            .contains("gamewrap run /path/to/game/executable")
    );

    for topic in [
        "settings",
        "doctor",
        "profiles",
        "bindings",
        "completion",
        "troubleshooting",
    ] {
        let result = env.run(&["help", topic]);
        assert_ok(&result);
        assert!(!result.output.is_empty());
    }

    let result = env.run(&["help", "nonsense"]);
    assert_exit(&result, 2);
    assert!(result.output.contains("not a known help topic"));

    let result = env.run(&["status"]);
    assert_ok(&result);
    assert!(result.output.contains("Resolved defaults:"));
    assert!(result.output.contains("gamescope:"));
    assert!(result.output.contains("vkbasalt:"));
    assert!(result.output.contains("Bindings:"));

    let result = env.run(&["doctor"]);
    assert_ok(&result);
    assert!(result.output.contains("Assumed launch context: Steam"));
    assert!(result.output.contains("gamescope: off"));
    assert!(result.output.contains("vkbasalt: off"));
    assert!(result.output.contains("gamescope compositor"));
    assert!(result.output.contains("vkbasalt layer"));

    let result = env.run(&["doctor", "/usr/bin/true"]);
    assert_ok(&result);
    assert!(result.output.contains("/usr/bin/true"));

    let result = env.run(&["run", "--help"]);
    assert_ok(&result);
    assert!(
        result
            .output
            .contains("Usage: gamewrap run [--] <COMMAND>...")
    );

    let result = env.run(&["dry-run", "--help"]);
    assert_ok(&result);
    assert!(
        result
            .output
            .contains("Usage: gamewrap dry-run [--] <COMMAND>...")
    );

    let result = env.run(&["run", "/usr/bin/true"]);
    assert_ok(&result);

    let result = env.run(&["dry-run", "/usr/bin/true"]);
    assert_ok(&result);
    assert!(result.output.contains("Resolved profile: default"));
    assert!(result.output.contains("Final command:"));

    assert_ok(&env.run(&["config", "set", "pre-launch", "printf pre"]));
    assert_ok(&env.run(&["config", "set", "post-launch", "printf post"]));
    let result = env.run(&["dry-run", "/usr/bin/true"]);
    assert_ok(&result);
    assert!(result.output.contains("Pre-launch hook:"));
    assert!(result.output.contains("sh -c \"printf pre\""));
    assert!(
        result
            .output
            .contains("Post-launch hook (runs after game exits):")
    );
    assert!(result.output.contains("sh -c \"printf post\""));

    let result = env.run(&["doctor", "/usr/bin/true"]);
    assert_ok(&result);
    assert!(result.output.contains("pre-launch: printf pre"));
    assert!(result.output.contains("post-launch: printf post"));

    assert_ok(&env.run(&["config", "set", "gamescope", "on"]));
    assert_ok(&env.run(&["config", "set", "gamescope-width", "1920"]));
    assert_ok(&env.run(&["config", "set", "gamescope-height", "1080"]));
    assert_ok(&env.run(&["config", "set", "gamescope-fps", "60"]));
    let fake_path = env.path_with_fake_bins(&["gamescope", "mangohud", "gamemoderun"]);
    let result = env.run_with_env(&["dry-run", "/usr/bin/true"], &[("PATH", &fake_path)]);
    assert_ok(&result);
    assert!(
        result
            .output
            .contains("gamescope -W 1920 -H 1080 -r 60 -- mangohud gamemoderun /usr/bin/true")
    );

    let result = env.run(&["completion", "bash"]);
    assert_ok(&result);
    assert!(result.output.contains("GAMEWRAP_COMPLETE=\"bash\""));

    let result = env.run(&["completion", "path", "zsh"]);
    assert_ok(&result);
    assert!(result.output.contains("Completion script path:"));
    assert!(result.output.contains(".zshrc"));

    let result = env.run(&["notify", "test"]);
    assert_ok(&result);
    assert!(
        result.output.contains("Sent test notification via")
            || result.output.contains("No notifier available.")
    );

    let result = env.run(&["completion", "install", "zsh"]);
    assert_ok(&result);
    assert!(result.output.contains("Installed zsh completion"));
    assert!(result.output.contains("show up automatically"));

    let script_path = env
        .config_home
        .join("gamewrap")
        .join("completions")
        .join("gamewrap.zsh");
    assert!(script_path.exists(), "missing installed script");
    let script = fs::read_to_string(&script_path).expect("read installed zsh script");
    assert!(script.contains("GAMEWRAP_COMPLETE=\"zsh\""));

    let zshrc_path = env.home.join(".zshrc");
    let zshrc = fs::read_to_string(&zshrc_path).expect("read zshrc");
    assert!(zshrc.contains("gamewrap completion"));
    assert!(zshrc.contains("source"));

    let result = env.run(&["run", "--", "definitely-not-a-real-command"]);
    assert_exit(&result, 4);
    assert!(result.output.contains("was not found in PATH"));

    let result = env.run(&["run", "--", "--help"]);
    assert_exit(&result, 2);
    assert!(
        result
            .output
            .contains("No runnable target command was provided.")
    );

    let result = env.run(&["dry-run", "--", "--help"]);
    assert_exit(&result, 2);
    assert!(
        result
            .output
            .contains("No runnable target command was provided.")
    );
}

#[test]
fn config_profiles_import_export_and_inheritance_work() {
    let env = TestEnv::new();

    let result = env.run(&["config", "--help"]);
    assert_ok(&result);
    assert!(result.output.contains("show"));
    assert!(result.output.contains("edit"));
    assert!(result.output.contains("reset"));
    assert!(result.output.contains("export"));
    assert!(result.output.contains("import"));

    let result = env.run(&["config", "show"]);
    assert_ok(&result);
    assert!(result.output.contains("overlay = on"));

    let result = env.run_with_env(&["config", "edit"], &[("EDITOR", "true")]);
    assert_ok(&result);
    assert!(result.output.is_empty());

    for (setting, value) in [
        ("overlay", "off"),
        ("performance", "off"),
        ("steam-host-libs", "off"),
        ("host-libs", "on"),
        ("game-libs", "keep"),
        ("verbose", "on"),
        ("gamescope", "on"),
        ("gamescope-width", "1920"),
        ("gamescope-height", "1080"),
        ("gamescope-fps", "60"),
        ("fps-cap", "60"),
        ("vkbasalt", "on"),
        ("esync", "off"),
        ("fsync", "on"),
        ("large-address-aware", "on"),
        ("pre-launch", "printf default-pre"),
        ("post-launch", "printf default-post"),
    ] {
        let result = env.run(&["config", "set", setting, value]);
        assert_ok(&result);
        assert!(result.output.contains("Updated default setting"));
    }

    let result = env.run(&["config", "show"]);
    assert_ok(&result);
    assert!(result.output.contains("overlay = off"));
    assert!(result.output.contains("performance = off"));
    assert!(result.output.contains("steam-host-libs = on"));
    assert!(result.output.contains("game-libs = keep"));
    assert!(result.output.contains("verbose = on"));
    assert!(result.output.contains("gamescope = on"));
    assert!(result.output.contains("gamescope-width = 1920"));
    assert!(result.output.contains("gamescope-height = 1080"));
    assert!(result.output.contains("gamescope-fps = 60"));
    assert!(result.output.contains("fps-cap = 60"));
    assert!(result.output.contains("vkbasalt = on"));
    assert!(result.output.contains("esync = off"));
    assert!(result.output.contains("fsync = on"));
    assert!(result.output.contains("large-address-aware = on"));
    assert!(result.output.contains("pre-launch = printf default-pre"));
    assert!(result.output.contains("post-launch = printf default-post"));

    let result = env.run(&["config", "set", "banana", "on"]);
    assert_exit(&result, 3);
    assert!(result.output.contains("not a known setting"));

    let result = env.run(&["config", "set", "overlay", "maybe"]);
    assert_exit(&result, 3);
    assert!(result.output.contains("valid on/off value"));

    let result = env.run(&["config", "set", "game-libs", "nonsense"]);
    assert_exit(&result, 3);
    assert!(result.output.contains("valid value for game-libs"));

    let result = env.run(&["config", "set", "fps-cap", "fast"]);
    assert_exit(&result, 3);
    assert!(result.output.contains("valid FPS cap"));

    let result = env.run(&["config", "set", "gamescope-width", "wide"]);
    assert_exit(&result, 3);
    assert!(result.output.contains("valid pixel count"));

    let result = env.run(&["config", "set", "gamescope-fps", "fast"]);
    assert_exit(&result, 3);
    assert!(result.output.contains("valid FPS"));

    let result = env.run(&["config", "reset", "overlay"]);
    assert_ok(&result);
    assert!(result.output.contains("Reset default setting `overlay`."));

    let result = env.run(&["config", "reset", "nope"]);
    assert_exit(&result, 3);
    assert!(result.output.contains("not a known setting"));

    let result = env.run(&["profile", "--help"]);
    assert_ok(&result);
    assert!(result.output.contains("tree"));
    assert!(result.output.contains("reset"));
    assert!(result.output.contains("duplicate"));
    assert!(result.output.contains("inherit"));
    assert!(result.output.contains("clear-inherit"));
    assert!(result.output.contains("env"));
    assert!(result.output.contains("export"));
    assert!(result.output.contains("import"));

    let result = env.run(&["profile", "list"]);
    assert_ok(&result);
    assert!(result.output.contains("No profiles configured."));

    for name in ["base", "benchmark", "recording"] {
        let result = env.run(&["profile", "create", name]);
        assert_ok(&result);
        assert!(result.output.contains("Created profile"));
    }

    let result = env.run(&["profile", "create", "default"]);
    assert_exit(&result, 3);
    assert!(result.output.contains("`default` is reserved"));

    let result = env.run(&["profile", "create", "benchmark"]);
    assert_exit(&result, 3);
    assert!(result.output.contains("already exists"));

    let result = env.run(&["profile", "show", "default"]);
    assert_ok(&result);
    assert!(result.output.contains("[defaults]"));

    let result = env.run(&["profile", "show", "benchmark"]);
    assert_ok(&result);
    assert!(result.output.contains("overlay = (inherits: on)"));
    assert!(result.output.contains("performance = (inherits: off)"));

    let result = env.run(&["profile", "set", "base", "overlay", "on"]);
    assert_ok(&result);
    let result = env.run(&["profile", "set", "base", "performance", "on"]);
    assert_ok(&result);
    let result = env.run(&["profile", "inherit", "benchmark", "base"]);
    assert_ok(&result);
    assert!(
        result
            .output
            .contains("Profile `benchmark` now inherits from `base`.")
    );

    let result = env.run(&["profile", "show", "benchmark"]);
    assert_ok(&result);
    assert!(result.output.contains("inherits = base"));
    assert!(result.output.contains("overlay = (inherits: on)"));

    let result = env.run(&["profile", "env", "set", "base", "GW_PARENT", "base-value"]);
    assert_ok(&result);
    assert!(
        result
            .output
            .contains("Set env `GW_PARENT=base-value` on profile `base`.")
    );
    let result = env.run(&[
        "profile",
        "env",
        "set",
        "benchmark",
        "GW_CHILD",
        "bench-value",
    ]);
    assert_ok(&result);
    let result = env.run(&[
        "profile",
        "env",
        "set",
        "benchmark",
        "GW_PARENT",
        "child-value",
    ]);
    assert_ok(&result);
    let result = env.run(&["profile", "env", "list", "benchmark"]);
    assert_ok(&result);
    assert!(result.output.contains("GW_CHILD=bench-value"));
    assert!(result.output.contains("GW_PARENT=child-value"));
    assert!(!result.output.contains("GW_PARENT=base-value"));

    let result = env.run(&["profile", "env", "unset", "benchmark", "GW_CHILD"]);
    assert_ok(&result);
    assert!(
        result
            .output
            .contains("Unset env `GW_CHILD` on profile `benchmark`.")
    );
    let result = env.run(&["profile", "env", "unset", "benchmark", "GW_MISSING"]);
    assert_ok(&result);
    assert!(
        result
            .output
            .contains("No env var `GW_MISSING` on profile `benchmark`.")
    );
    let result = env.run(&["profile", "env", "clear", "benchmark"]);
    assert_ok(&result);
    assert!(
        result
            .output
            .contains("Cleared all env vars from profile `benchmark`.")
    );
    let result = env.run(&["profile", "env", "list", "benchmark"]);
    assert_ok(&result);
    assert!(result.output.contains("GW_PARENT=base-value"));

    let result = env.run(&["profile", "tree"]);
    assert_ok(&result);
    assert!(result.output.contains("default (built-in)"));
    assert!(result.output.contains("base"));
    assert!(result.output.contains("benchmark"));

    let result = env.run(&["game", "bind", "Demo.exe", "benchmark"]);
    assert_ok(&result);
    let result = env.run(&["profile", "list"]);
    assert_ok(&result);
    assert!(
        result
            .output
            .contains("benchmark (inherits: base, 1 binding)")
    );
    let result = env.run(&["game", "unbind", "Demo.exe"]);
    assert_ok(&result);

    for (setting, value) in [
        ("overlay", "off"),
        ("performance", "on"),
        ("steam-host-libs", "off"),
        ("game-libs", "gamemode"),
        ("verbose", "off"),
        ("gamescope", "on"),
        ("gamescope-width", "2560"),
        ("gamescope-height", "1440"),
        ("gamescope-fps", "120"),
        ("fps-cap", "120"),
        ("vkbasalt", "off"),
        ("esync", "on"),
        ("fsync", "off"),
        ("laa", "off"),
        ("pre-launch", "printf profile-pre"),
        ("post-launch", "printf profile-post"),
    ] {
        let result = env.run(&["profile", "set", "benchmark", setting, value]);
        assert_ok(&result);
        assert!(result.output.contains("Updated profile `benchmark`"));
    }

    let result = env.run(&["profile", "show", "benchmark"]);
    assert_ok(&result);
    assert!(result.output.contains("inherits = base"));
    assert!(result.output.contains("overlay = off"));
    assert!(result.output.contains("performance = on"));
    assert!(result.output.contains("steam-host-libs = off"));
    assert!(result.output.contains("game-libs = gamemode"));
    assert!(result.output.contains("verbose = off"));
    assert!(result.output.contains("gamescope = on"));
    assert!(result.output.contains("gamescope-width = 2560"));
    assert!(result.output.contains("gamescope-height = 1440"));
    assert!(result.output.contains("gamescope-fps = 120"));
    assert!(result.output.contains("fps-cap = 120"));
    assert!(result.output.contains("vkbasalt = off"));
    assert!(result.output.contains("esync = on"));
    assert!(result.output.contains("fsync = off"));
    assert!(result.output.contains("large-address-aware = off"));
    assert!(result.output.contains("pre-launch = printf profile-pre"));
    assert!(result.output.contains("post-launch = printf profile-post"));

    let result = env.run(&["profile", "duplicate", "benchmark", "benchmark-copy"]);
    assert_ok(&result);
    assert!(
        result
            .output
            .contains("Duplicated profile `benchmark` to `benchmark-copy`.")
    );

    let result = env.run(&["profile", "show", "benchmark-copy"]);
    assert_ok(&result);
    assert!(result.output.contains("inherits = base"));
    assert!(result.output.contains("overlay = off"));

    let result = env.run(&["profile", "duplicate", "missing", "whatever"]);
    assert_exit(&result, 3);
    assert!(result.output.contains("Profile `missing` does not exist."));

    let result = env.run(&["profile", "duplicate", "benchmark", "benchmark-copy"]);
    assert_exit(&result, 3);
    assert!(
        result
            .output
            .contains("Profile `benchmark-copy` already exists.")
    );

    let result = env.run(&["profile", "set", "missing", "overlay", "on"]);
    assert_exit(&result, 3);
    assert!(result.output.contains("Profile `missing` does not exist."));

    let result = env.run(&["profile", "set", "benchmark", "nope", "on"]);
    assert_exit(&result, 3);
    assert!(result.output.contains("not a known setting"));

    let result = env.run(&["profile", "set", "benchmark", "overlay", "maybe"]);
    assert_exit(&result, 3);
    assert!(result.output.contains("valid on/off value"));

    for setting in [
        "overlay",
        "performance",
        "steam-host-libs",
        "game-libs",
        "verbose",
        "gamescope",
        "gamescope-width",
        "gamescope-height",
        "gamescope-fps",
        "fps-cap",
        "vkbasalt",
        "esync",
        "fsync",
        "large-address-aware",
        "pre-launch",
        "post-launch",
    ] {
        let result = env.run(&["profile", "reset", "benchmark", setting]);
        assert_ok(&result);
        assert!(result.output.contains("Reset profile `benchmark` setting"));
    }

    let result = env.run(&["profile", "show", "benchmark"]);
    assert_ok(&result);
    assert!(result.output.contains("inherits = base"));
    assert!(result.output.contains("overlay = (inherits: on)"));
    assert!(result.output.contains("performance = (inherits: on)"));
    assert!(result.output.contains("steam-host-libs = (inherits: on)"));
    assert!(result.output.contains("game-libs = (inherits: keep)"));
    assert!(result.output.contains("verbose = (inherits: on)"));
    assert!(result.output.contains("gamescope = (inherits: on)"));
    assert!(result.output.contains("gamescope-width = (inherits: 1920)"));
    assert!(
        result
            .output
            .contains("gamescope-height = (inherits: 1080)")
    );
    assert!(result.output.contains("gamescope-fps = (inherits: 60)"));
    assert!(result.output.contains("fps-cap = (inherits: 60)"));
    assert!(result.output.contains("vkbasalt = (inherits: on)"));
    assert!(result.output.contains("esync = (inherits: off)"));
    assert!(result.output.contains("fsync = (inherits: on)"));
    assert!(
        result
            .output
            .contains("large-address-aware = (inherits: on)")
    );
    assert!(
        result
            .output
            .contains("pre-launch = (inherits: printf default-pre)")
    );
    assert!(
        result
            .output
            .contains("post-launch = (inherits: printf default-post)")
    );

    let result = env.run(&["profile", "inherit", "benchmark-copy", "recording"]);
    assert_ok(&result);
    let result = env.run(&["profile", "show", "benchmark-copy"]);
    assert_ok(&result);
    assert!(result.output.contains("inherits = recording"));

    let result = env.run(&["profile", "inherit", "benchmark-copy", "default"]);
    assert_exit(&result, 3);
    assert!(result.output.contains("`default` is already the base"));

    let result = env.run(&["profile", "inherit", "benchmark-copy", "missing"]);
    assert_exit(&result, 3);
    assert!(
        result
            .output
            .contains("Parent profile `missing` does not exist.")
    );

    let result = env.run(&["profile", "inherit", "recording", "benchmark-copy"]);
    assert_exit(&result, 3);
    assert!(result.output.contains("Profile inheritance cycle detected"));

    let result = env.run(&["profile", "delete", "recording"]);
    assert_exit(&result, 3);
    assert!(result.output.contains("Cannot delete profile `recording`"));

    let result = env.run(&["profile", "clear-inherit", "benchmark-copy"]);
    assert_ok(&result);
    assert!(
        result
            .output
            .contains("Cleared inherited parent for `benchmark-copy`.")
    );

    let result = env.run(&["profile", "show", "benchmark-copy"]);
    assert_ok(&result);
    assert!(!result.output.contains("inherits = "));
    assert!(result.output.contains("overlay = off"));

    let result = env.run(&["profile", "reset", "missing", "overlay"]);
    assert_exit(&result, 3);
    assert!(result.output.contains("Profile `missing` does not exist."));

    let result = env.run(&["profile", "show", "missing"]);
    assert_exit(&result, 3);
    assert!(result.output.contains("does not exist"));

    let export_base = env.path("exported-config");
    let export_file = env.path("exported-config.gamewrap.toml");
    let result = env.run(&["config", "export"]);
    assert_ok(&result);
    assert!(result.output.contains("kind = \"gamewrap-config\""));
    assert!(result.output.contains("version = 1"));
    assert!(result.output.contains("[defaults]"));
    assert!(result.output.contains("overlay = true"));
    assert!(result.output.contains("[profiles.base]"));
    assert!(result.output.contains("[profiles.benchmark]"));
    assert!(result.output.contains("[profiles.benchmark-copy]"));

    let result = env.run(&["config", "export", export_base.to_str().expect("utf8 path")]);
    assert_ok(&result);
    assert!(result.output.contains("Exported config to"));
    let exported = fs::read_to_string(&export_file).expect("export file");
    assert!(exported.contains("kind = \"gamewrap-config\""));
    assert!(exported.contains("[profiles.base]"));
    assert!(exported.contains("[profiles.benchmark-copy]"));

    let imported_env = TestEnv::new();
    let result = imported_env.run(&["config", "import", export_base.to_str().expect("utf8 path")]);
    assert_ok(&result);
    let result = imported_env.run(&["config", "show"]);
    assert_ok(&result);
    assert!(!result.output.contains("(inherits:"));
    assert!(result.output.contains("benchmark"));
    assert!(result.output.contains("benchmark-copy"));
    assert!(result.output.contains("overlay = on"));

    let profile_export_base = env.path("benchmark");
    let profile_export = env.path("benchmark.gamewrap-profile.toml");
    let result = env.run(&[
        "profile",
        "export",
        "benchmark",
        profile_export_base.to_str().expect("utf8 path"),
    ]);
    assert_ok(&result);
    assert!(result.output.contains("Exported profile `benchmark`"));
    let exported_profile = fs::read_to_string(&profile_export).expect("profile export");
    assert!(exported_profile.contains("kind = \"gamewrap-profile\""));
    assert!(exported_profile.contains("name = \"benchmark\""));
    assert!(exported_profile.contains("[settings]"));

    let imported_profile_env = TestEnv::new();
    let result = imported_profile_env.run(&[
        "profile",
        "import",
        profile_export_base.to_str().expect("utf8 path"),
    ]);
    assert_ok(&result);
    assert!(result.output.contains("Imported profile `benchmark`"));
    let result = imported_profile_env.run(&["profile", "show", "benchmark"]);
    assert_ok(&result);
    assert!(!result.output.contains("inherits ="));
    assert!(result.output.contains("overlay = on"));

    let result = imported_profile_env.run(&[
        "profile",
        "import",
        profile_export_base.to_str().expect("utf8 path"),
    ]);
    assert_exit(&result, 3);
    assert!(
        result
            .output
            .contains("Profile `benchmark` already exists.")
    );

    let invalid_file = env.path("invalid.toml");
    fs::write(&invalid_file, "not = [valid").expect("write invalid config");
    let result = env.run(&[
        "config",
        "import",
        invalid_file.to_str().expect("utf8 path"),
    ]);
    assert_exit(&result, 3);
    assert!(result.output.contains("is invalid"));

    let invalid_profile = env.path("invalid.gamewrap-profile.toml");
    fs::write(
        &invalid_profile,
        "kind = \"gamewrap-profile\"\nversion = 1\n",
    )
    .expect("write invalid profile");
    let result = env.run(&[
        "profile",
        "import",
        invalid_profile.to_str().expect("utf8 path"),
    ]);
    assert_exit(&result, 3);
    assert!(result.output.contains("Profile import file"));
}

#[test]
fn games_bindings_notes_and_filters_work() {
    let env = TestEnv::new();

    assert_ok(&env.run(&["config", "set", "overlay", "off"]));
    assert_ok(&env.run(&["config", "set", "performance", "off"]));
    assert_ok(&env.run(&["profile", "create", "benchmark"]));
    assert_ok(&env.run(&["profile", "create", "recording"]));

    let result = env.run(&["game", "--help"]);
    assert_ok(&result);
    assert!(result.output.contains("bind"));
    assert!(result.output.contains("unbind"));
    assert!(result.output.contains("forget"));
    assert!(result.output.contains("note"));
    assert!(result.output.contains("clear-note"));

    let result = env.run(&["game", "list"]);
    assert_ok(&result);
    assert!(result.output.contains("(no observed games yet)"));

    let result = env.run(&["game", "show", "missing.exe"]);
    assert_exit(&result, 3);
    assert!(result.output.contains("No observed game matched"));

    let result = env.run(&["game", "bind", "Example.exe", "unknown"]);
    assert_exit(&result, 3);
    assert!(result.output.contains("Profile `unknown` does not exist."));

    let result = env.run_with_env(
        &[
            "/usr/bin/true",
            "--",
            "/usr/bin/true",
            "waitforexitandrun",
            "/games/Grind Survivors/GrindSurvivors.exe",
        ],
        &[("SteamAppId", "12345")],
    );
    assert_ok(&result);

    let result = env.run_with_env(
        &[
            "/usr/bin/true",
            "--",
            "/usr/bin/true",
            "waitforexitandrun",
            "/games/StarRupture/StarRuptureGameSteam.exe",
        ],
        &[("SteamAppId", "67890")],
    );
    assert_ok(&result);

    let result = env.run(&["game", "list"]);
    assert_ok(&result);
    assert!(result.output.contains("GrindSurvivors.exe"));
    assert!(result.output.contains("StarRuptureGameSteam.exe"));
    assert!(result.output.contains("default"));

    let result = env.run(&["last"]);
    assert_ok(&result);
    assert!(
        result
            .output
            .contains("Last played: StarRuptureGameSteam.exe")
    );
    assert!(result.output.contains("Launches:    1"));
    assert!(result.output.contains("Last launch: 20"));

    let result = env.run(&["game", "list", "grind"]);
    assert_ok(&result);
    assert!(result.output.contains("GrindSurvivors.exe"));
    assert!(!result.output.contains("StarRuptureGameSteam.exe"));

    let result = env.run(&["game", "show", "starrupturegamesteam.exe"]);
    assert_ok(&result);
    assert!(
        result
            .output
            .contains("Executable: StarRuptureGameSteam.exe")
    );
    assert!(result.output.contains("Launch count: 1"));
    assert!(result.output.contains("Last launched: 20"));

    let result = env.run(&["game", "show", "Grind Survivors"]);
    assert_ok(&result);
    assert!(
        result
            .output
            .contains("/games/Grind Survivors/GrindSurvivors.exe")
    );

    let result = env.run(&["game", "rename", "StarRuptureGameSteam.exe", "Star Rupture"]);
    assert_ok(&result);
    assert!(
        result
            .output
            .contains("Renamed `StarRuptureGameSteam.exe` to `Star Rupture`.")
    );

    let result = env.run(&["game", "list"]);
    assert_ok(&result);
    assert!(result.output.contains("Star Rupture"));
    assert!(!result.output.contains("StarRuptureGameSteam.exe  default"));

    let result = env.run(&["game", "show", "StarRuptureGameSteam.exe"]);
    assert_ok(&result);
    assert!(result.output.contains("Display name: Star Rupture"));

    let result = env.run(&["game", "bind", "StarRuptureGameSteam.exe", "benchmark"]);
    assert_ok(&result);
    assert!(
        result
            .output
            .contains("Bound `StarRuptureGameSteam.exe` to profile `benchmark`.")
    );

    let result = env.run(&[
        "game",
        "bind",
        "/games/Grind Survivors/GrindSurvivors.exe",
        "recording",
    ]);
    assert_ok(&result);
    assert!(
        result
            .output
            .contains("Bound `/games/Grind Survivors/GrindSurvivors.exe` to profile `recording`.")
    );

    let result = env.run(&["game", "list"]);
    assert_ok(&result);
    assert!(result.output.contains("Game"));
    assert!(result.output.contains("Profile"));
    assert!(result.output.contains("Path"));
    assert!(result.output.contains("benchmark"));
    assert!(result.output.contains("recording"));

    let result = env.run(&["game", "show", "StarRuptureGameSteam.exe"]);
    assert_ok(&result);
    assert!(result.output.contains("Resolved profile: benchmark"));
    assert!(result.output.contains("Last launched profile: default"));

    let result = env.run(&[
        "game",
        "note",
        "StarRuptureGameSteam.exe",
        "needs",
        "game-libs",
        "gamemode",
    ]);
    assert_ok(&result);
    assert!(
        result
            .output
            .contains("Saved note for `StarRuptureGameSteam.exe`.")
    );

    let result = env.run(&["game", "show", "StarRuptureGameSteam.exe"]);
    assert_ok(&result);
    assert!(result.output.contains("Note: needs game-libs gamemode"));

    let result = env.run(&["status"]);
    assert_ok(&result);
    assert!(result.output.contains("note: needs game-libs gamemode"));

    let result = env.run(&["config", "show"]);
    assert_ok(&result);
    assert!(
        result
            .output
            .contains("StarRuptureGameSteam.exe -> benchmark")
    );
    assert!(
        result
            .output
            .contains("/games/Grind Survivors/GrindSurvivors.exe -> recording")
    );

    let result = env.run(&["game", "unbind", "starrupture"]);
    assert_ok(&result);
    assert!(result.output.contains("Removed binding for `starrupture`."));

    let result = env.run(&["config", "show"]);
    assert_ok(&result);
    assert!(
        !result
            .output
            .contains("StarRuptureGameSteam.exe -> benchmark")
    );
    assert!(
        result
            .output
            .contains("/games/Grind Survivors/GrindSurvivors.exe -> recording")
    );

    let result = env.run(&["game", "list", "star"]);
    assert_ok(&result);
    assert!(result.output.contains("StarRuptureGameSteam.exe"));
    assert!(result.output.contains("default"));
    assert!(!result.output.contains("GrindSurvivors.exe"));

    let result = env.run(&["game", "clear-note", "StarRuptureGameSteam.exe"]);
    assert_ok(&result);
    assert!(
        result
            .output
            .contains("Cleared note for `StarRuptureGameSteam.exe`.")
    );

    let result = env.run(&["game", "show", "StarRuptureGameSteam.exe"]);
    assert_ok(&result);
    assert!(!result.output.contains("Note:"));

    let result = env.run(&["game", "forget", "StarRuptureGameSteam.exe"]);
    assert_ok(&result);
    assert!(
        result
            .output
            .contains("Removed `StarRuptureGameSteam.exe` from observed games.")
    );

    let result = env.run(&["game", "show", "StarRuptureGameSteam.exe"]);
    assert_exit(&result, 3);
    assert!(result.output.contains("No observed game matched"));

    let result = env.run(&["game", "list", "star"]);
    assert_ok(&result);
    assert!(!result.output.contains("StarRuptureGameSteam.exe"));

    let result = env.run(&["game", "unbind", "StarRuptureGameSteam.exe"]);
    assert_exit(&result, 3);
    assert!(
        result
            .output
            .contains("No binding exists for `StarRuptureGameSteam.exe`.")
    );

    let result = env.run(&["profile", "delete", "benchmark"]);
    assert_ok(&result);
    assert!(
        result
            .output
            .contains("Deleted profile `benchmark` and removed bindings that pointed to it.")
    );

    let result = env.run(&["game", "bind", "StarRuptureGameSteam.exe", "benchmark"]);
    assert_exit(&result, 3);
    assert!(
        result
            .output
            .contains("Profile `benchmark` does not exist.")
    );

    let result = env.run(&["profile", "delete", "recording"]);
    assert_ok(&result);
    assert!(
        result
            .output
            .contains("Deleted profile `recording` and removed bindings that pointed to it.")
    );

    let result = env.run(&["profile", "list"]);
    assert_ok(&result);
    assert!(result.output.contains("No profiles configured."));

    let result = env.run(&["config", "show"]);
    assert_ok(&result);
    assert!(result.output.contains("[bindings]"));
    assert!(result.output.contains("(none)"));
}

#[test]
fn subcommand_typos_and_extra_args_fail_cleanly() {
    let env = TestEnv::new();

    for args in [&["game"][..], &["profile"][..], &["config"][..]] {
        let result = env.run(args);
        assert_exit(&result, 2);
        assert!(result.output.contains("Usage: gamewrap"));
    }

    let result = env.run(&["game", "shwo", "StarRuptureGameSteam.exe"]);
    assert_exit(&result, 2);
    assert!(result.output.contains("unrecognized subcommand 'shwo'"));

    let result = env.run(&["profile", "crtate", "foo"]);
    assert_exit(&result, 2);
    assert!(result.output.contains("unrecognized subcommand 'crtate'"));

    let result = env.run(&["config", "sett", "overlay", "on"]);
    assert_exit(&result, 2);
    assert!(result.output.contains("unrecognized subcommand 'sett'"));

    let result = env.run(&["status", "now"]);
    assert_exit(&result, 2);
    assert!(result.output.contains("unexpected argument 'now' found"));
}

#[test]
fn post_launch_hook_runs_after_game_exits() {
    let env = TestEnv::new();

    // Disable overlay and performance so we don't need mangohud/gamemoderun.
    assert_ok(&env.run(&["config", "set", "overlay", "off"]));
    assert_ok(&env.run(&["config", "set", "performance", "off"]));

    // Set a post-launch hook that prints a distinctive string to stdout.
    assert_ok(&env.run(&["config", "set", "post-launch", "printf POSTHOOK_RAN"]));

    // Run a real command (true exits immediately).
    let result = env.run(&["run", "/usr/bin/true"]);
    assert_ok(&result);
    assert!(
        result.output.contains("POSTHOOK_RAN"),
        "post-launch hook did not run; output was:\n{}",
        result.output
    );

    // dry-run should show the post-launch hook in preview.
    let result = env.run(&["dry-run", "/usr/bin/true"]);
    assert_ok(&result);
    assert!(
        result
            .output
            .contains("Post-launch hook (runs after game exits):")
    );
    assert!(result.output.contains("printf POSTHOOK_RAN"));
}

#[test]
fn env_vars_appear_in_verbose_dry_run() {
    let env = TestEnv::new();

    assert_ok(&env.run(&["config", "set", "overlay", "on"]));
    assert_ok(&env.run(&["config", "set", "performance", "off"]));
    assert_ok(&env.run(&["config", "set", "verbose", "on"]));
    assert_ok(&env.run(&["config", "set", "vkbasalt", "on"]));
    assert_ok(&env.run(&["config", "set", "esync", "on"]));
    assert_ok(&env.run(&["config", "set", "fsync", "off"]));
    assert_ok(&env.run(&["config", "set", "large-address-aware", "on"]));
    assert_ok(&env.run(&["config", "set", "fps-cap", "60"]));

    let fake_path = env.path_with_fake_bins(&["mangohud"]);
    let result = env.run_with_env(&["dry-run", "/usr/bin/true"], &[("PATH", &fake_path)]);
    assert_ok(&result);

    // Verbose mode shows environment changes.
    assert!(result.output.contains("Environment changes:"));
    assert!(result.output.contains("ENABLE_VKBASALT=1"));
    assert!(result.output.contains("PROTON_NO_ESYNC=0"));
    assert!(result.output.contains("PROTON_NO_FSYNC=1"));
    assert!(result.output.contains("PROTON_LARGE_ADDRESS_AWARE=1"));
    assert!(result.output.contains("MANGOHUD_PARAMS=fps_limit=60"));

    // Final command should have mangohud prefix.
    assert!(result.output.contains("mangohud /usr/bin/true"));
}

#[test]
fn launch_count_and_playtime_tracked() {
    let env = TestEnv::new();

    assert_ok(&env.run(&["config", "set", "overlay", "off"]));
    assert_ok(&env.run(&["config", "set", "performance", "off"]));

    // Simulate two Steam launches of the same game.
    for _ in 0..2 {
        assert_ok(&env.run_with_env(
            &[
                "/usr/bin/true",
                "--",
                "/usr/bin/true",
                "waitforexitandrun",
                "/games/TestGame/TestGame.exe",
            ],
            &[("SteamAppId", "99999")],
        ));
    }

    // game show should show launch count of 2.
    let result = env.run(&["game", "show", "TestGame.exe"]);
    assert_ok(&result);
    assert!(result.output.contains("Launch count: 2"));
    assert!(result.output.contains("Last launched: 20"));

    // gamewrap last should show it.
    let result = env.run(&["last"]);
    assert_ok(&result);
    assert!(result.output.contains("Last played: TestGame.exe"));
    assert!(result.output.contains("Launches:    2"));
}