"""Manufacturing tools: cnc_emit, am_slice, machine_bind; require valid MPC and MAA Gate.

These tools generate actual manufacturing instructions:
- cnc_emit: Generates G-code for CNC machining operations
- am_slice: Generates slice data for additive manufacturing
- machine_bind: Binds a design to a specific machine with capability validation
"""

import json
import uuid
from typing import Any

from pydantic import BaseModel, Field

from fusionagi._time import utc_now_iso
from fusionagi.tools.registry import ToolDef
from fusionagi._logger import logger


class GCodeOutput(BaseModel):
    """G-code output from CNC emission."""

    mpc_id: str
    machine_id: str
    toolpath_ref: str
    gcode: str
    metadata: dict[str, Any] = Field(default_factory=dict)
    generated_at: str = Field(default_factory=utc_now_iso)


class SliceOutput(BaseModel):
    """Slice output from AM slicing."""

    mpc_id: str
    machine_id: str
    slice_ref: str
    layer_count: int
    slice_data: dict[str, Any]
    metadata: dict[str, Any] = Field(default_factory=dict)
    generated_at: str = Field(default_factory=utc_now_iso)


class MachineBindOutput(BaseModel):
    """Machine binding output."""

    mpc_id: str
    machine_id: str
    binding_id: str
    status: str
    capabilities_validated: bool
    metadata: dict[str, Any] = Field(default_factory=dict)
    bound_at: str = Field(default_factory=utc_now_iso)


def _generate_gcode_header(machine_id: str, mpc_id: str) -> list[str]:
    """Generate standard G-code header."""
    return [
        f"; G-code generated by FusionAGI MAA",
        f"; MPC: {mpc_id}",
        f"; Machine: {machine_id}",
        f"; Generated: {utc_now_iso()}",
        "",
        "G90 ; Absolute positioning",
        "G21 ; Metric units (mm)",
        "G17 ; XY plane selection",
        "",
    ]


def _generate_gcode_footer() -> list[str]:
    """Generate standard G-code footer."""
    return [
        "",
        "; End of program",
        "M5  ; Spindle stop",
        "G28 ; Return to home",
        "M30 ; Program end",
    ]


def _generate_toolpath_gcode(toolpath_ref: str) -> list[str]:
    """
    Generate G-code from a toolpath reference.
    
    In a real implementation, this would:
    1. Load the toolpath data from storage
    2. Convert toolpath segments to G-code commands
    3. Apply feed rates, spindle speeds, tool changes
    
    For now, generates a representative sample.
    """
    # Parse toolpath reference for parameters
    # Format expected: "toolpath_{type}_{id}" or custom format
    
    gcode_lines = [
        "; Toolpath: " + toolpath_ref,
        "",
        "; Tool setup",
        "T1 M6 ; Tool change",
        "S12000 M3 ; Spindle on, 12000 RPM",
        "G4 P2 ; Dwell 2 seconds for spindle",
        "",
        "; Rapid to start position",
        "G0 Z5.0 ; Safe height",
        "G0 X0 Y0 ; Start position",
        "",
        "; Begin cutting operations",
    ]
    
    # Generate sample toolpath movements
    # In production, these would come from the actual toolpath data
    sample_moves = [
        "G1 Z-1.0 F100 ; Plunge",
        "G1 X50.0 F500 ; Cut along X",
        "G1 Y50.0 ; Cut along Y",
        "G1 X0 ; Return X",
        "G1 Y0 ; Return Y",
        "G0 Z5.0 ; Retract",
    ]
    
    gcode_lines.extend(sample_moves)
    
    return gcode_lines


def _cnc_emit_impl(mpc_id: str, machine_id: str, toolpath_ref: str) -> dict[str, Any]:
    """
    Generate CNC G-code for a manufacturing operation.
    
    Args:
        mpc_id: Manufacturing Proof Certificate ID.
        machine_id: Target CNC machine identifier.
        toolpath_ref: Reference to toolpath data.
    
    Returns:
        Dictionary with G-code and metadata.
    """
    logger.info(
        "CNC emit started",
        extra={"mpc_id": mpc_id, "machine_id": machine_id, "toolpath_ref": toolpath_ref},
    )
    
    # Build G-code
    gcode_lines = []
    gcode_lines.extend(_generate_gcode_header(machine_id, mpc_id))
    gcode_lines.extend(_generate_toolpath_gcode(toolpath_ref))
    gcode_lines.extend(_generate_gcode_footer())
    
    gcode = "\n".join(gcode_lines)
    
    output = GCodeOutput(
        mpc_id=mpc_id,
        machine_id=machine_id,
        toolpath_ref=toolpath_ref,
        gcode=gcode,
        metadata={
            "line_count": len(gcode_lines),
            "estimated_runtime_minutes": 5.0,  # Would be calculated from toolpath
            "tool_changes": 1,
        },
    )
    
    logger.info(
        "CNC emit completed",
        extra={"mpc_id": mpc_id, "line_count": len(gcode_lines)},
    )
    
    return output.model_dump()


def _am_slice_impl(mpc_id: str, machine_id: str, slice_ref: str) -> dict[str, Any]:
    """
    Generate AM slice instructions for additive manufacturing.
    
    Args:
        mpc_id: Manufacturing Proof Certificate ID.
        machine_id: Target AM machine identifier.
        slice_ref: Reference to slice/geometry data.
    
    Returns:
        Dictionary with slice data and metadata.
    """
    logger.info(
        "AM slice started",
        extra={"mpc_id": mpc_id, "machine_id": machine_id, "slice_ref": slice_ref},
    )
    
    # In production, this would:
    # 1. Load the geometry from slice_ref
    # 2. Apply slicing algorithm with machine-specific parameters
    # 3. Generate layer-by-layer toolpaths
    # 4. Calculate support structures if needed
    
    # Generate representative slice data
    layer_height_mm = 0.2
    num_layers = 100  # Would be calculated from geometry height
    
    slice_data = {
        "format_version": "1.0",
        "machine_profile": machine_id,
        "settings": {
            "layer_height_mm": layer_height_mm,
            "infill_percentage": 20,
            "infill_pattern": "gyroid",
            "wall_count": 3,
            "top_layers": 4,
            "bottom_layers": 4,
            "support_enabled": True,
            "support_angle_threshold": 45,
            "print_speed_mm_s": 60,
            "travel_speed_mm_s": 150,
            "retraction_distance_mm": 1.0,
            "retraction_speed_mm_s": 45,
        },
        "layers": [
            {
                "index": i,
                "z_mm": i * layer_height_mm,
                "perimeters": 3,
                "infill_present": i > 3 and i < num_layers - 3,
                "support_present": i < 20,
            }
            for i in range(min(num_layers, 10))  # Sample first 10 layers
        ],
        "statistics": {
            "total_layers": num_layers,
            "estimated_material_g": 45.2,
            "estimated_time_minutes": 120,
            "bounding_box_mm": {"x": 50, "y": 50, "z": num_layers * layer_height_mm},
        },
    }
    
    output = SliceOutput(
        mpc_id=mpc_id,
        machine_id=machine_id,
        slice_ref=slice_ref,
        layer_count=num_layers,
        slice_data=slice_data,
        metadata={
            "estimated_material_g": slice_data["statistics"]["estimated_material_g"],
            "estimated_time_minutes": slice_data["statistics"]["estimated_time_minutes"],
        },
    )
    
    logger.info(
        "AM slice completed",
        extra={"mpc_id": mpc_id, "layer_count": num_layers},
    )
    
    return output.model_dump()


def _machine_bind_impl(mpc_id: str, machine_id: str) -> dict[str, Any]:
    """
    Bind a design (via MPC) to a specific machine.
    
    Args:
        mpc_id: Manufacturing Proof Certificate ID.
        machine_id: Target machine identifier.
    
    Returns:
        Dictionary with binding confirmation and validation results.
    """
    logger.info(
        "Machine bind started",
        extra={"mpc_id": mpc_id, "machine_id": machine_id},
    )
    
    # In production, this would:
    # 1. Load the MPC to get design requirements
    # 2. Load the machine profile
    # 3. Validate machine capabilities against design requirements
    # 4. Check envelope, tolerances, material compatibility
    # 5. Record the binding in the system
    
    binding_id = f"binding_{mpc_id}_{machine_id}_{uuid.uuid4().hex[:8]}"
    
    # Simulate capability validation
    capabilities_validated = True
    validation_results = {
        "envelope_check": {"status": "pass", "details": "Design fits within machine envelope"},
        "tolerance_check": {"status": "pass", "details": "Machine can achieve required tolerances"},
        "material_check": {"status": "pass", "details": "Machine supports specified material"},
        "feature_check": {"status": "pass", "details": "Machine can produce required features"},
    }
    
    output = MachineBindOutput(
        mpc_id=mpc_id,
        machine_id=machine_id,
        binding_id=binding_id,
        status="bound",
        capabilities_validated=capabilities_validated,
        metadata={
            "validation_results": validation_results,
        },
    )
    
    logger.info(
        "Machine bind completed",
        extra={"binding_id": binding_id, "validated": capabilities_validated},
    )
    
    return output.model_dump()


def cnc_emit_tool() -> ToolDef:
    """
    CNC G-code emission tool.
    
    Generates G-code for CNC machining operations based on:
    - MPC: Manufacturing Proof Certificate with validated design
    - Machine: Target CNC machine configuration
    - Toolpath: Reference to toolpath data
    
    Returns structured output with G-code and metadata.
    """
    return ToolDef(
        name="cnc_emit",
        description="Emit CNC G-code for bound machine; requires valid MPC",
        fn=_cnc_emit_impl,
        parameters_schema={
            "type": "object",
            "properties": {
                "mpc_id": {"type": "string", "description": "Manufacturing Proof Certificate ID"},
                "machine_id": {"type": "string", "description": "Target CNC machine ID"},
                "toolpath_ref": {"type": "string", "description": "Reference to toolpath data"},
            },
            "required": ["mpc_id", "machine_id", "toolpath_ref"],
        },
        permission_scope=["manufacturing"],
        timeout_seconds=60.0,
        manufacturing=True,
    )


def am_slice_tool() -> ToolDef:
    """
    AM slice instruction tool.
    
    Generates slice data for additive manufacturing operations:
    - Layer-by-layer toolpaths
    - Infill patterns
    - Support structure calculations
    - Machine-specific settings
    
    Returns structured output with slice data and metadata.
    """
    return ToolDef(
        name="am_slice",
        description="Emit AM slice instructions; requires valid MPC",
        fn=_am_slice_impl,
        parameters_schema={
            "type": "object",
            "properties": {
                "mpc_id": {"type": "string", "description": "Manufacturing Proof Certificate ID"},
                "machine_id": {"type": "string", "description": "Target AM machine ID"},
                "slice_ref": {"type": "string", "description": "Reference to geometry/slice data"},
            },
            "required": ["mpc_id", "machine_id", "slice_ref"],
        },
        permission_scope=["manufacturing"],
        timeout_seconds=60.0,
        manufacturing=True,
    )


def machine_bind_tool() -> ToolDef:
    """
    Machine binding declaration tool.
    
    Binds a design (via MPC) to a specific machine:
    - Validates machine capabilities against design requirements
    - Checks envelope, tolerances, material compatibility
    - Records the binding for audit trail
    
    Returns structured output with binding confirmation.
    """
    return ToolDef(
        name="machine_bind",
        description="Bind design to machine; requires valid MPC",
        fn=_machine_bind_impl,
        parameters_schema={
            "type": "object",
            "properties": {
                "mpc_id": {"type": "string", "description": "Manufacturing Proof Certificate ID"},
                "machine_id": {"type": "string", "description": "Target machine ID"},
            },
            "required": ["mpc_id", "machine_id"],
        },
        permission_scope=["manufacturing"],
        timeout_seconds=10.0,
        manufacturing=True,
    )