from fastapi import APIRouter
from pydantic import BaseModel

router = APIRouter()

class Workflow(BaseModel):
    name: str
    steps: list

@router.get("/list")
async def get_automation_list():
    return []

@router.post("/trigger/{id}")
async def trigger_automation_route(id: str):
    from backend.services.automation_service import trigger_automation
    await trigger_automation(id)
    return {"status": "triggered"}

@router.post("/pause_all")
async def pause_all():
    from backend.services.automation_service import pause_all_automations
    await pause_all_automations()
    return {"status": "paused"}

@router.post("/resume_all")
async def resume_all():
    from backend.services.automation_service import resume_all_automations
    await resume_all_automations()
    return {"status": "resumed"}

@router.post("/jobs/{job_id}/pause")
async def pause_single_job(job_id: str):
    from backend.services.automation_service import pause_job
    pause_job(job_id)
    return {"status": f"job {job_id} paused"}

@router.post("/jobs/{job_id}/resume")
async def resume_single_job(job_id: str):
    from backend.services.automation_service import resume_job
    resume_job(job_id)
    return {"status": f"job {job_id} resumed"}

@router.delete("/jobs/{job_id}")
async def delete_single_job(job_id: str):
    from backend.services.automation_service import delete_job
    delete_job(job_id)
    return {"status": f"job {job_id} deleted"}

@router.post("/save")
async def save_workflow(w: Workflow):
    return {"status": "saved"}

@router.get("/history")
async def get_history():
    return []

@router.post("/dry-run")
async def dry_run_workflow(w: Workflow):
    """
    Simulates workflow execution without side effects.
    Returns a preview of the steps and their expected mock results.
    """
    import asyncio
    preview_steps = []
    
    for i, step in enumerate(w.steps):
        # Determine a mock result based on step type if present
        step_type = step.get('type', 'unknown') if isinstance(step, dict) else 'unknown'
        mock_result = f"Mock result for {step_type}"
        if step_type == 'api_call': mock_result = "HTTP 200 OK (Mock)"
        elif step_type == 'script': mock_result = "Script execution simulated"
        elif step_type == 'agent': mock_result = "Agent reasoning simulated"
        
        preview_steps.append({
            "step_index": i,
            "step_config": step,
            "expected_status": "success",
            "mock_result": mock_result
        })
        
        # Simulate minor delay
        await asyncio.sleep(0.1)

    return {
        "status": "dry-run-complete",
        "total_steps": len(w.steps),
        "execution_preview": preview_steps
    }