use dirigent_fermata::core::secrets::config::{
    EnforcementMode, HeuristicMode, ParseErrorAction, RedactionStyle, SecretsConfig,
    BUILTIN_KEY_PATTERNS,
};

#[test]
fn parse_minimal_files_only() {
    let cfg = SecretsConfig::from_toml(
        r#"
[files]
patterns = [".env", ".env.*"]
"#,
    )
    .unwrap();
    assert_eq!(cfg.files.patterns, vec![".env", ".env.*"]);
    // Other sections use defaults
    assert_eq!(cfg.redaction.style, RedactionStyle::Masked);
    assert_eq!(cfg.enforcement.mode, EnforcementMode::Permissive);
}

#[test]
fn parse_full_config() {
    let cfg = SecretsConfig::from_toml(
        r#"
[files]
patterns = [".env", "secrets.*"]

[keys]
include = ["STRIPE_*", "TWILIO_*"]
exclude = ["PUBLIC_KEY", "SSH_KEY_PATH"]

[redaction]
style = "typed"

[heuristic]
enabled = false
mode = "report"
patterns = ['AKIA[A-Z2-7]{16}']

[enforcement]
mode = "strict"
on_parse_error = "deny"

[[file]]
path = "settings.py"
format = "python-assignments"
keys = ["SECRET_KEY", "DATABASES.*.PASSWORD"]
"#,
    )
    .unwrap();

    assert_eq!(cfg.files.patterns, vec![".env", "secrets.*"]);
    assert_eq!(cfg.keys.include, vec!["STRIPE_*", "TWILIO_*"]);
    assert_eq!(cfg.keys.exclude, vec!["PUBLIC_KEY", "SSH_KEY_PATH"]);
    assert_eq!(cfg.redaction.style, RedactionStyle::Typed);
    assert!(!cfg.heuristic.enabled);
    assert_eq!(cfg.heuristic.mode, HeuristicMode::Report);
    assert_eq!(cfg.heuristic.patterns, vec!["AKIA[A-Z2-7]{16}"]);
    assert_eq!(cfg.enforcement.mode, EnforcementMode::Strict);
    assert_eq!(cfg.enforcement.on_parse_error, ParseErrorAction::Deny);
    assert_eq!(cfg.file_overrides.len(), 1);
    assert_eq!(cfg.file_overrides[0].path, "settings.py");
    assert_eq!(
        cfg.file_overrides[0].format.as_deref(),
        Some("python-assignments")
    );
    assert_eq!(
        cfg.file_overrides[0].keys,
        vec!["SECRET_KEY", "DATABASES.*.PASSWORD"]
    );
}

#[test]
fn empty_toml_returns_defaults() {
    let cfg = SecretsConfig::from_toml("").unwrap();
    assert!(!cfg.files.patterns.is_empty());
    assert!(cfg.files.patterns.contains(&".env".to_string()));
    assert_eq!(cfg.redaction.style, RedactionStyle::Masked);
    assert!(cfg.heuristic.enabled);
    assert_eq!(cfg.heuristic.mode, HeuristicMode::Enforce);
    assert_eq!(cfg.enforcement.mode, EnforcementMode::Permissive);
    assert_eq!(
        cfg.enforcement.on_parse_error,
        ParseErrorAction::MaskEntireFile
    );
    assert!(cfg.file_overrides.is_empty());
}

#[test]
fn invalid_toml_produces_error() {
    let result = SecretsConfig::from_toml("this is not valid {{ toml");
    assert!(result.is_err());
    let err_msg = result.unwrap_err().to_string();
    assert!(
        err_msg.contains("expected"),
        "error should describe parse issue: {err_msg}"
    );
}

#[test]
fn effective_key_includes_has_builtins() {
    let cfg = SecretsConfig::default();
    let effective = cfg.effective_key_includes();
    for builtin in BUILTIN_KEY_PATTERNS {
        assert!(
            effective.contains(&builtin.to_string()),
            "missing builtin: {builtin}"
        );
    }
}

#[test]
fn effective_key_includes_adds_user_patterns() {
    let cfg = SecretsConfig::from_toml(
        r#"
[keys]
include = ["MY_CUSTOM_SECRET_*"]
"#,
    )
    .unwrap();
    let effective = cfg.effective_key_includes();
    assert!(effective.contains(&"MY_CUSTOM_SECRET_*".to_string()));
    // Builtins still present
    assert!(effective.contains(&"*PASSWORD*".to_string()));
}

#[test]
fn effective_key_includes_removes_excluded() {
    let cfg = SecretsConfig::from_toml(
        r#"
[keys]
exclude = ["*TOKEN*", "SENTRY_DSN"]
"#,
    )
    .unwrap();
    let effective = cfg.effective_key_includes();
    assert!(
        !effective.contains(&"*TOKEN*".to_string()),
        "excluded pattern should be removed"
    );
    assert!(
        !effective.contains(&"SENTRY_DSN".to_string()),
        "excluded pattern should be removed"
    );
    // Other builtins still present
    assert!(effective.contains(&"*PASSWORD*".to_string()));
}

#[test]
fn key_matches_glob_case_insensitive() {
    let cfg = SecretsConfig::default();
    assert!(cfg.key_matches("DATABASE_URL"));
    assert!(cfg.key_matches("database_url"));
    assert!(cfg.key_matches("my_password_here"));
    assert!(cfg.key_matches("MY_PASSWORD_HERE"));
    assert!(cfg.key_matches("STRIPE_SECRET_KEY"));
    assert!(cfg.key_matches("AWS_ACCESS_KEY_ID"));
}

#[test]
fn key_matches_non_secret_keys() {
    let cfg = SecretsConfig::default();
    assert!(!cfg.key_matches("DEBUG"));
    assert!(!cfg.key_matches("LOG_LEVEL"));
    assert!(!cfg.key_matches("PORT"));
    assert!(!cfg.key_matches("HOST"));
}

#[test]
fn key_matches_respects_user_include() {
    let cfg = SecretsConfig::from_toml(
        r#"
[keys]
include = ["MY_APP_*"]
"#,
    )
    .unwrap();
    assert!(cfg.key_matches("MY_APP_SETTING"));
    assert!(cfg.key_matches("my_app_setting"));
}

#[test]
fn key_matches_respects_user_exclude() {
    let cfg = SecretsConfig::from_toml(
        r#"
[keys]
exclude = ["*TOKEN*"]
"#,
    )
    .unwrap();
    // TOKEN patterns were excluded, so GITHUB_TOKEN should no longer match
    // via the *TOKEN* pattern. But it might match via GITHUB_TOKEN literal.
    // Let's check something that only matched *TOKEN*.
    assert!(!cfg.key_matches("MY_TOKEN"));
    // PASSWORD still matches
    assert!(cfg.key_matches("MY_PASSWORD"));
}

#[test]
fn builtin_file_patterns_present() {
    let cfg = SecretsConfig::default();
    let patterns = &cfg.files.patterns;
    assert!(patterns.contains(&".env".to_string()));
    assert!(patterns.contains(&"*.pem".to_string()));
    assert!(patterns.contains(&".aws/credentials".to_string()));
    assert!(patterns.contains(&"terraform.tfvars".to_string()));
}

#[test]
fn load_missing_files_returns_defaults() {
    let tmp = tempfile::tempdir().unwrap();
    let cfg = SecretsConfig::load(tmp.path()).unwrap();
    assert_eq!(cfg.files.patterns, SecretsConfig::default().files.patterns);
    assert_eq!(cfg.redaction.style, RedactionStyle::Masked);
}

#[test]
fn load_project_botsecrets() {
    let tmp = tempfile::tempdir().unwrap();
    std::fs::write(
        tmp.path().join(".botsecrets"),
        r#"
[redaction]
style = "named"

[keys]
include = ["CUSTOM_*"]
"#,
    )
    .unwrap();

    let cfg = SecretsConfig::load(tmp.path()).unwrap();
    assert_eq!(cfg.redaction.style, RedactionStyle::Named);
    assert!(cfg.effective_key_includes().contains(&"CUSTOM_*".to_string()));
    // File patterns remain at defaults (not overridden)
    assert!(cfg.files.patterns.contains(&".env".to_string()));
}

#[test]
fn load_local_overrides_project() {
    let tmp = tempfile::tempdir().unwrap();
    std::fs::write(
        tmp.path().join(".botsecrets"),
        r#"
[redaction]
style = "named"
[enforcement]
mode = "strict"
"#,
    )
    .unwrap();
    std::fs::write(
        tmp.path().join(".botsecrets.local"),
        r#"
[redaction]
style = "absent"
"#,
    )
    .unwrap();

    let cfg = SecretsConfig::load(tmp.path()).unwrap();
    // .local overrides .botsecrets for redaction style
    assert_eq!(cfg.redaction.style, RedactionStyle::Absent);
    // enforcement from .botsecrets is preserved (not in .local)
    assert_eq!(cfg.enforcement.mode, EnforcementMode::Strict);
}

#[test]
fn load_invalid_botsecrets_returns_error() {
    let tmp = tempfile::tempdir().unwrap();
    std::fs::write(tmp.path().join(".botsecrets"), "invalid {{ toml").unwrap();
    let result = SecretsConfig::load(tmp.path());
    assert!(result.is_err());
    let err = result.unwrap_err().to_string();
    assert!(err.contains(".botsecrets"), "error should mention file: {err}");
}

#[test]
fn merge_keys_accumulate() {
    let tmp = tempfile::tempdir().unwrap();
    std::fs::write(
        tmp.path().join(".botsecrets"),
        r#"
[keys]
include = ["FROM_PROJECT"]
exclude = ["EXCLUDE_PROJECT"]
"#,
    )
    .unwrap();
    std::fs::write(
        tmp.path().join(".botsecrets.local"),
        r#"
[keys]
include = ["FROM_LOCAL"]
exclude = ["EXCLUDE_LOCAL"]
"#,
    )
    .unwrap();

    let cfg = SecretsConfig::load(tmp.path()).unwrap();
    assert!(cfg.keys.include.contains(&"FROM_PROJECT".to_string()));
    assert!(cfg.keys.include.contains(&"FROM_LOCAL".to_string()));
    assert!(cfg.keys.exclude.contains(&"EXCLUDE_PROJECT".to_string()));
    assert!(cfg.keys.exclude.contains(&"EXCLUDE_LOCAL".to_string()));
}

#[test]
fn merge_file_patterns_replaced_not_appended() {
    let tmp = tempfile::tempdir().unwrap();
    std::fs::write(
        tmp.path().join(".botsecrets"),
        r#"
[files]
patterns = ["only-this.env"]
"#,
    )
    .unwrap();

    let cfg = SecretsConfig::load(tmp.path()).unwrap();
    assert_eq!(cfg.files.patterns, vec!["only-this.env"]);
    // Defaults should be gone, replaced by the project's list
    assert!(!cfg.files.patterns.contains(&".env".to_string()));
}

#[test]
fn all_redaction_styles_parse() {
    for (input, expected) in [
        ("masked", RedactionStyle::Masked),
        ("typed", RedactionStyle::Typed),
        ("named", RedactionStyle::Named),
        ("absent", RedactionStyle::Absent),
    ] {
        let toml_str = format!("[redaction]\nstyle = \"{input}\"");
        let cfg = SecretsConfig::from_toml(&toml_str).unwrap();
        assert_eq!(cfg.redaction.style, expected, "failed for: {input}");
    }
}

#[test]
fn all_enforcement_modes_parse() {
    for (input, expected) in [
        ("strict", EnforcementMode::Strict),
        ("permissive", EnforcementMode::Permissive),
        ("audit", EnforcementMode::Audit),
    ] {
        let toml_str = format!("[enforcement]\nmode = \"{input}\"");
        let cfg = SecretsConfig::from_toml(&toml_str).unwrap();
        assert_eq!(cfg.enforcement.mode, expected, "failed for: {input}");
    }
}

#[test]
fn all_heuristic_modes_parse() {
    for (input, expected) in [
        ("enforce", HeuristicMode::Enforce),
        ("report", HeuristicMode::Report),
        ("disabled", HeuristicMode::Disabled),
    ] {
        let toml_str = format!("[heuristic]\nmode = \"{input}\"");
        let cfg = SecretsConfig::from_toml(&toml_str).unwrap();
        assert_eq!(cfg.heuristic.mode, expected, "failed for: {input}");
    }
}

#[test]
fn serialization_roundtrip() {
    let cfg = SecretsConfig::from_toml(
        r#"
[files]
patterns = [".env"]
[redaction]
style = "typed"
[enforcement]
mode = "audit"
on_parse_error = "allow"
"#,
    )
    .unwrap();

    let serialized = toml::to_string(&cfg).unwrap();
    let deserialized: SecretsConfig = toml::from_str(&serialized).unwrap();
    assert_eq!(deserialized.redaction.style, RedactionStyle::Typed);
    assert_eq!(deserialized.enforcement.mode, EnforcementMode::Audit);
    assert_eq!(
        deserialized.enforcement.on_parse_error,
        ParseErrorAction::Allow
    );
}