gobby-core 0.4.0

//! Shared runtime context boundary.
//!
//! Consumer crates keep their CLI flags and domain state locally. This module
//! owns the public location for cross-crate project, daemon, and service context
//! types as the Rust foundation expands.

use std::path::{Path, PathBuf};

use crate::config::{
    ConfigSource, EmbeddingConfig, FalkorConfig, QdrantConfig, resolve_embedding_config,
    resolve_falkordb_config, resolve_qdrant_config,
};

/// Resolved runtime context for any gobby-core consumer.
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct CoreContext {
    /// Project root directory containing `.gobby/`.
    project_root: PathBuf,
    /// Project ID from `.gobby/project.json`.
    project_id: String,
    /// PostgreSQL hub DSN resolved by the consumer.
    database_url: Option<String>,
    /// FalkorDB config when available.
    falkordb: Option<FalkorConfig>,
    /// Qdrant config when available.
    qdrant: Option<QdrantConfig>,
    /// Embedding API config when available.
    embedding: Option<EmbeddingConfig>,
    /// Gobby daemon base URL.
    daemon_url: String,
}

impl CoreContext {
    /// Build a context from pre-resolved project identity and DSN inputs.
    pub fn build(
        project_root: PathBuf,
        project_id: String,
        database_url: Option<String>,
        source: &mut impl ConfigSource,
    ) -> Self {
        let falkordb = resolve_falkordb_config(source);
        let qdrant = resolve_qdrant_config(source);
        let embedding = resolve_embedding_config(source);
        let daemon_url = crate::daemon_url::daemon_url();

        Self {
            project_root,
            project_id,
            database_url,
            falkordb,
            qdrant,
            embedding,
            daemon_url,
        }
    }

    pub fn project_root(&self) -> &Path {
        &self.project_root
    }

    pub fn project_id(&self) -> &str {
        &self.project_id
    }

    pub fn database_url(&self) -> Option<&str> {
        self.database_url.as_deref()
    }

    pub fn falkordb(&self) -> Option<&FalkorConfig> {
        self.falkordb.as_ref()
    }

    pub fn qdrant(&self) -> Option<&QdrantConfig> {
        self.qdrant.as_ref()
    }

    pub fn embedding(&self) -> Option<&EmbeddingConfig> {
        self.embedding.as_ref()
    }

    pub fn daemon_url(&self) -> &str {
        &self.daemon_url
    }
}

#[cfg(test)]
mod tests {
    use super::*;
    use crate::config::{EnvOnlySource, TEST_ENV_LOCK, embedding_keys};
    use std::collections::HashMap;
    use std::sync::MutexGuard;

    struct EnvGuard {
        _lock: MutexGuard<'static, ()>,
    }

    impl EnvGuard {
        fn new() -> Self {
            let guard = Self {
                _lock: TEST_ENV_LOCK
                    .lock()
                    .unwrap_or_else(|poisoned| poisoned.into_inner()),
            };
            guard.clear();
            guard
        }

        fn clear(&self) {
            for key in [
                "GOBBY_FALKORDB_HOST",
                "GOBBY_FALKORDB_PORT",
                "GOBBY_FALKORDB_PASSWORD",
                "GOBBY_QDRANT_URL",
                "GOBBY_QDRANT_API_KEY",
            ] {
                // SAFETY: TEST_ENV_LOCK serializes all test environment mutation
                // here, and the loop only touches the fixed key list above.
                unsafe { std::env::remove_var(key) };
            }
        }

        fn set(&self, key: &str, value: &str) {
            unsafe { std::env::set_var(key, value) };
        }
    }

    impl Drop for EnvGuard {
        fn drop(&mut self) {
            self.clear();
        }
    }

    struct TestConfigSource {
        values: HashMap<&'static str, String>,
    }

    impl TestConfigSource {
        fn with_values(values: impl IntoIterator<Item = (&'static str, &'static str)>) -> Self {
            Self {
                values: values
                    .into_iter()
                    .map(|(key, value)| (key, value.to_string()))
                    .collect(),
            }
        }
    }

    impl ConfigSource for TestConfigSource {
        fn config_value(&mut self, key: &str) -> Option<String> {
            self.values.get(key).cloned()
        }

        fn resolve_value(&mut self, value: &str) -> anyhow::Result<String> {
            Ok(value.to_string())
        }
    }

    #[test]
    fn missing_diagnostic_service_config_is_none() {
        let _env = EnvGuard::new();
        let mut source = EnvOnlySource;
        let root = std::path::PathBuf::from("/tmp/gobby-project");

        let context = CoreContext::build(root.clone(), "project-id".to_string(), None, &mut source);

        assert_eq!(context.project_root(), root.as_path());
        assert_eq!(context.project_id(), "project-id");
        assert_eq!(context.database_url(), None);
        assert!(context.falkordb().is_none());
        assert!(context.qdrant().is_none());
        assert!(context.embedding().is_none());
        assert!(!context.daemon_url().is_empty());
    }

    #[test]
    fn build_with_env_only_source() {
        let env = EnvGuard::new();
        env.set("GOBBY_FALKORDB_HOST", "env-falkor.local");
        env.set("GOBBY_FALKORDB_PORT", "17000");
        env.set("GOBBY_QDRANT_URL", "http://env-qdrant:6333");

        let mut source = EnvOnlySource;
        let root = std::path::PathBuf::from("/tmp/gobby-project");

        let context = CoreContext::build(
            root.clone(),
            "project-id".to_string(),
            Some("postgres://example".to_string()),
            &mut source,
        );

        assert_eq!(context.project_root(), root.as_path());
        assert_eq!(context.project_id(), "project-id");
        assert_eq!(context.database_url(), Some("postgres://example"));
        assert_eq!(
            context.falkordb().map(|c| c.host.as_str()),
            Some("env-falkor.local")
        );
        assert_eq!(
            context.qdrant().and_then(|c| c.url.as_deref()),
            Some("http://env-qdrant:6333")
        );
        assert!(context.embedding().is_none());
        assert!(!context.daemon_url().is_empty());
    }

    #[test]
    fn build_with_config_source_embedding() {
        let _env = EnvGuard::new();

        let mut source = TestConfigSource::with_values([
            (embedding_keys::AI_API_BASE, "http://config-embedding:11434"),
            (embedding_keys::AI_MODEL, "config-model"),
        ]);
        let root = std::path::PathBuf::from("/tmp/gobby-project");

        let context = CoreContext::build(root, "project-id".to_string(), None, &mut source);

        let embedding = context.embedding().expect("embedding config");
        assert_eq!(embedding.api_base, "http://config-embedding:11434");
        assert_eq!(embedding.model, "config-model");
    }
}