//! Code execution tools using Docker sandboxing

use crate::sandbox::Sandbox;
use async_trait::async_trait;
use owlen_core::Result;
use owlen_core::tools::{Tool, ToolResult};
use serde_json::{Value, json};
use std::path::PathBuf;

/// Tool for compiling projects (Rust, Node.js, Python)
pub struct CompileProjectTool {
    sandbox: Sandbox,
}

impl Default for CompileProjectTool {
    fn default() -> Self {
        Self::new()
    }
}

impl CompileProjectTool {
    pub fn new() -> Self {
        Self {
            sandbox: Sandbox::default(),
        }
    }
}

#[async_trait]
impl Tool for CompileProjectTool {
    fn name(&self) -> &'static str {
        "compile_project"
    }

    fn description(&self) -> &'static str {
        "Compile a project (Rust, Node.js, Python). Detects project type automatically."
    }

    fn schema(&self) -> Value {
        json!({
            "type": "object",
            "properties": {
                "project_path": {
                    "type": "string",
                    "description": "Path to the project root"
                },
                "project_type": {
                    "type": "string",
                    "enum": ["rust", "node", "python"],
                    "description": "Project type (auto-detected if not specified)"
                }
            },
            "required": ["project_path"]
        })
    }

    async fn execute(&self, args: Value) -> Result<ToolResult> {
        let project_path = args
            .get("project_path")
            .and_then(|v| v.as_str())
            .ok_or_else(|| owlen_core::Error::InvalidInput("Missing project_path".into()))?;

        let path = PathBuf::from(project_path);
        if !path.exists() {
            return Ok(ToolResult::error("Project path does not exist"));
        }

        // Detect project type
        let project_type = if let Some(pt) = args.get("project_type").and_then(|v| v.as_str()) {
            pt.to_string()
        } else if path.join("Cargo.toml").exists() {
            "rust".to_string()
        } else if path.join("package.json").exists() {
            "node".to_string()
        } else if path.join("setup.py").exists() || path.join("pyproject.toml").exists() {
            "python".to_string()
        } else {
            return Ok(ToolResult::error("Could not detect project type"));
        };

        // Execute compilation
        let result = match project_type.as_str() {
            "rust" => self.sandbox.execute_rust(&path, &["cargo", "build"]).await,
            "node" => {
                self.sandbox
                    .execute_node(&path, &["npm", "run", "build"])
                    .await
            }
            "python" => {
                // Python typically doesn't need compilation, but we can check syntax
                self.sandbox
                    .execute_python(&path, &["python", "-m", "compileall", "."])
                    .await
            }
            _ => return Ok(ToolResult::error("Unsupported project type")),
        };

        match result {
            Ok(exec_result) => {
                if exec_result.timed_out {
                    Ok(ToolResult::error("Compilation timed out"))
                } else if exec_result.exit_code == 0 {
                    Ok(ToolResult::success(json!({
                        "success": true,
                        "stdout": exec_result.stdout,
                        "stderr": exec_result.stderr,
                        "project_type": project_type
                    })))
                } else {
                    Ok(ToolResult::success(json!({
                        "success": false,
                        "exit_code": exec_result.exit_code,
                        "stdout": exec_result.stdout,
                        "stderr": exec_result.stderr,
                        "project_type": project_type
                    })))
                }
            }
            Err(e) => Ok(ToolResult::error(&format!("Compilation failed: {}", e))),
        }
    }
}

/// Tool for running test suites
pub struct RunTestsTool {
    sandbox: Sandbox,
}

impl Default for RunTestsTool {
    fn default() -> Self {
        Self::new()
    }
}

impl RunTestsTool {
    pub fn new() -> Self {
        Self {
            sandbox: Sandbox::default(),
        }
    }
}

#[async_trait]
impl Tool for RunTestsTool {
    fn name(&self) -> &'static str {
        "run_tests"
    }

    fn description(&self) -> &'static str {
        "Run tests for a project (Rust, Node.js, Python)"
    }

    fn schema(&self) -> Value {
        json!({
            "type": "object",
            "properties": {
                "project_path": {
                    "type": "string",
                    "description": "Path to the project root"
                },
                "test_filter": {
                    "type": "string",
                    "description": "Optional test filter/pattern"
                }
            },
            "required": ["project_path"]
        })
    }

    async fn execute(&self, args: Value) -> Result<ToolResult> {
        let project_path = args
            .get("project_path")
            .and_then(|v| v.as_str())
            .ok_or_else(|| owlen_core::Error::InvalidInput("Missing project_path".into()))?;

        let path = PathBuf::from(project_path);
        if !path.exists() {
            return Ok(ToolResult::error("Project path does not exist"));
        }

        let test_filter = args.get("test_filter").and_then(|v| v.as_str());

        // Detect project type and run tests
        let result = if path.join("Cargo.toml").exists() {
            let cmd = if let Some(filter) = test_filter {
                vec!["cargo", "test", filter]
            } else {
                vec!["cargo", "test"]
            };
            self.sandbox.execute_rust(&path, &cmd).await
        } else if path.join("package.json").exists() {
            self.sandbox.execute_node(&path, &["npm", "test"]).await
        } else if path.join("pytest.ini").exists()
            || path.join("setup.py").exists()
            || path.join("pyproject.toml").exists()
        {
            let cmd = if let Some(filter) = test_filter {
                vec!["pytest", "-k", filter]
            } else {
                vec!["pytest"]
            };
            self.sandbox.execute_python(&path, &cmd).await
        } else {
            return Ok(ToolResult::error("Could not detect test framework"));
        };

        match result {
            Ok(exec_result) => Ok(ToolResult::success(json!({
                "success": exec_result.exit_code == 0 && !exec_result.timed_out,
                "exit_code": exec_result.exit_code,
                "stdout": exec_result.stdout,
                "stderr": exec_result.stderr,
                "timed_out": exec_result.timed_out
            }))),
            Err(e) => Ok(ToolResult::error(&format!("Tests failed to run: {}", e))),
        }
    }
}

/// Tool for formatting code
pub struct FormatCodeTool {
    sandbox: Sandbox,
}

impl Default for FormatCodeTool {
    fn default() -> Self {
        Self::new()
    }
}

impl FormatCodeTool {
    pub fn new() -> Self {
        Self {
            sandbox: Sandbox::default(),
        }
    }
}

#[async_trait]
impl Tool for FormatCodeTool {
    fn name(&self) -> &'static str {
        "format_code"
    }

    fn description(&self) -> &'static str {
        "Format code using project-appropriate formatter (rustfmt, prettier, black)"
    }

    fn schema(&self) -> Value {
        json!({
            "type": "object",
            "properties": {
                "project_path": {
                    "type": "string",
                    "description": "Path to the project root"
                },
                "check_only": {
                    "type": "boolean",
                    "description": "Only check formatting without modifying files",
                    "default": false
                }
            },
            "required": ["project_path"]
        })
    }

    async fn execute(&self, args: Value) -> Result<ToolResult> {
        let project_path = args
            .get("project_path")
            .and_then(|v| v.as_str())
            .ok_or_else(|| owlen_core::Error::InvalidInput("Missing project_path".into()))?;

        let path = PathBuf::from(project_path);
        if !path.exists() {
            return Ok(ToolResult::error("Project path does not exist"));
        }

        let check_only = args
            .get("check_only")
            .and_then(|v| v.as_bool())
            .unwrap_or(false);

        // Detect project type and run formatter
        let result = if path.join("Cargo.toml").exists() {
            let cmd = if check_only {
                vec!["cargo", "fmt", "--", "--check"]
            } else {
                vec!["cargo", "fmt"]
            };
            self.sandbox.execute_rust(&path, &cmd).await
        } else if path.join("package.json").exists() {
            let cmd = if check_only {
                vec!["npx", "prettier", "--check", "."]
            } else {
                vec!["npx", "prettier", "--write", "."]
            };
            self.sandbox.execute_node(&path, &cmd).await
        } else if path.join("setup.py").exists() || path.join("pyproject.toml").exists() {
            let cmd = if check_only {
                vec!["black", "--check", "."]
            } else {
                vec!["black", "."]
            };
            self.sandbox.execute_python(&path, &cmd).await
        } else {
            return Ok(ToolResult::error("Could not detect project type"));
        };

        match result {
            Ok(exec_result) => Ok(ToolResult::success(json!({
                "success": exec_result.exit_code == 0,
                "formatted": !check_only && exec_result.exit_code == 0,
                "stdout": exec_result.stdout,
                "stderr": exec_result.stderr
            }))),
            Err(e) => Ok(ToolResult::error(&format!("Formatting failed: {}", e))),
        }
    }
}

/// Tool for linting code
pub struct LintCodeTool {
    sandbox: Sandbox,
}

impl Default for LintCodeTool {
    fn default() -> Self {
        Self::new()
    }
}

impl LintCodeTool {
    pub fn new() -> Self {
        Self {
            sandbox: Sandbox::default(),
        }
    }
}

#[async_trait]
impl Tool for LintCodeTool {
    fn name(&self) -> &'static str {
        "lint_code"
    }

    fn description(&self) -> &'static str {
        "Lint code using project-appropriate linter (clippy, eslint, pylint)"
    }

    fn schema(&self) -> Value {
        json!({
            "type": "object",
            "properties": {
                "project_path": {
                    "type": "string",
                    "description": "Path to the project root"
                },
                "fix": {
                    "type": "boolean",
                    "description": "Automatically fix issues if possible",
                    "default": false
                }
            },
            "required": ["project_path"]
        })
    }

    async fn execute(&self, args: Value) -> Result<ToolResult> {
        let project_path = args
            .get("project_path")
            .and_then(|v| v.as_str())
            .ok_or_else(|| owlen_core::Error::InvalidInput("Missing project_path".into()))?;

        let path = PathBuf::from(project_path);
        if !path.exists() {
            return Ok(ToolResult::error("Project path does not exist"));
        }

        let fix = args.get("fix").and_then(|v| v.as_bool()).unwrap_or(false);

        // Detect project type and run linter
        let result = if path.join("Cargo.toml").exists() {
            let cmd = if fix {
                vec!["cargo", "clippy", "--fix", "--allow-dirty"]
            } else {
                vec!["cargo", "clippy"]
            };
            self.sandbox.execute_rust(&path, &cmd).await
        } else if path.join("package.json").exists() {
            let cmd = if fix {
                vec!["npx", "eslint", ".", "--fix"]
            } else {
                vec!["npx", "eslint", "."]
            };
            self.sandbox.execute_node(&path, &cmd).await
        } else if path.join("setup.py").exists() || path.join("pyproject.toml").exists() {
            // pylint doesn't have auto-fix
            self.sandbox.execute_python(&path, &["pylint", "."]).await
        } else {
            return Ok(ToolResult::error("Could not detect project type"));
        };

        match result {
            Ok(exec_result) => {
                let issues_found = exec_result.exit_code != 0;
                Ok(ToolResult::success(json!({
                    "success": true,
                    "issues_found": issues_found,
                    "exit_code": exec_result.exit_code,
                    "stdout": exec_result.stdout,
                    "stderr": exec_result.stderr
                })))
            }
            Err(e) => Ok(ToolResult::error(&format!("Linting failed: {}", e))),
        }
    }
}