Turning point of an integral function

Let $f(x)=\int_{-1}^{x^2-2x} e^{t^2-t}\,dt$ for all $x\in\mathbb{R}$. If $f$ is decreasing on $(0,m)$ and increasing on $(m,\infty)$, then the value of $m$ is equal to __________ (answer in integer)