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# Source code for mindroot.coreplugins.usage.router

    from fastapi import APIRouter, Request, Depends, HTTPException
    from fastapi.responses import HTMLResponse, JSONResponse
    from datetime import date
    from typing import Optional
    from lib.templates import render
    from .storage import UsageStorage
    from .handlers import UsageTracker
    from .reporting import UsageReport
    from lib.route_decorators import requires_role

    router = APIRouter(dependencies=[requires_role('admin')])

    def get_base_path():
        from pathlib import Path
        return str(Path.cwd())

    @router.get("/admin/usage")
    async def usage_admin(request: Request):
        """Admin interface for usage tracking configuration"""
        storage = UsageStorage(get_base_path())

        template_data = {
            "cost_types": await storage.load_cost_types(),
            "current_costs": await storage.load_costs()
        }

        html = await render('usage', template_data)
        return HTMLResponse(html)

    @router.post("/api/admin/usage/costs")
    async def update_costs(request: Request):
        """Update cost configuration"""
        try:
            storage = UsageStorage(get_base_path())
            data = await request.json()

            plugin_id = data.get('plugin_id')
            cost_type_id = data.get('cost_type_id')
            unit_cost = float(data.get('unit_cost', 0))
            model_id = data.get('model_id')

            if not all([plugin_id, cost_type_id]):
                raise HTTPException(status_code=400, detail="Missing required fields")

            await storage.save_cost(plugin_id, cost_type_id, unit_cost, model_id)
            return JSONResponse({"status": "success"})

        except ValueError as e:
            raise HTTPException(status_code=400, detail=str(e))

    @router.get("/api/admin/usage/report/{username}")
    async def get_user_report(
        request: Request,
        username: str,
        start_date: Optional[str] = None,
        end_date: Optional[str] = None
    ):
        """Get usage report for a specific user"""
        try:
            storage = UsageStorage(get_base_path())
            report = UsageReport(storage)

            start = date.fromisoformat(start_date) if start_date else None
            end = date.fromisoformat(end_date) if end_date else None

            report_data = await report.get_user_report(username, start, end)
            return JSONResponse(report_data)

        except ValueError as e:
            raise HTTPException(status_code=400, detail=str(e))

    @router.get("/api/admin/usage/summary/{username}")
    async def get_user_summary(
        request: Request,
        username: str,
        start_date: Optional[str] = None,
        end_date: Optional[str] = None
    ):
        """Get cost summary for a specific user"""
        try:
            storage = UsageStorage(get_base_path())
            report = UsageReport(storage)

            start = date.fromisoformat(start_date) if start_date else None
            end = date.fromisoformat(end_date) if end_date else None

            summary = await report.get_cost_summary(username, start, end)
            return JSONResponse(summary)

        except ValueError as e:
            raise HTTPException(status_code=400, detail=str(e))

    @router.get("/api/admin/usage/daily/{username}")
    async def get_user_daily(
        request: Request,
        username: str,
        start_date: Optional[str] = None,
        end_date: Optional[str] = None
    ):
        """Get daily cost breakdown for a specific user"""
        try:
            storage = UsageStorage(get_base_path())
            report = UsageReport(storage)

            start = date.fromisoformat(start_date) if start_date else None
            end = date.fromisoformat(end_date) if end_date else None

            daily_costs = await report.get_daily_costs(username, start, end)
            return JSONResponse(daily_costs)

        except ValueError as e:
            raise HTTPException(status_code=400, detail=str(e))