import LockOutlinedIcon from "@mui/icons-material/LockOutlined";
import { Alert } from "@mui/material";
import Avatar from "@mui/material/Avatar";
import Box from "@mui/material/Box";
import Button from "@mui/material/Button";
import CssBaseline from "@mui/material/CssBaseline";
import Grid from "@mui/material/Grid";
import Link from "@mui/material/Link";
import Paper from "@mui/material/Paper";
import TextField from "@mui/material/TextField";
import Typography from "@mui/material/Typography";
import * as React from "react";
import { useAlert } from "../hooks/context_providers/AlertDialogProvider";
import { useLoadingMessage } from "../hooks/context_providers/LoadingMessageProvider";
import { AuthApi } from "../api/AuthApi";

function Copyright(props: any) {
  return (
    <Typography
      variant="body2"
      color="text.secondary"
      align="center"
      {...props}
    >
      {"Copyright © "}
      <Link color="inherit" href="https://0ph.fr/">
        Pierre HUBERT
      </Link>{" "}
      {new Date().getFullYear()}
      {"."}
    </Typography>
  );
}

export function LoginRoute() {
  const loadingMessage = useLoadingMessage();

  const [user, setUser] = React.useState("");
  const [password, setPassword] = React.useState("");

  const [error, setError] = React.useState<string | undefined>();

  const handleSubmit = async (event: React.FormEvent<HTMLFormElement>) => {
    event.preventDefault();
    try {
      loadingMessage.show("Signing in...");
      setError(undefined);

      await AuthApi.AuthWithPassword(user, password);

      location.href = "/";
    } catch (e) {
      console.error("Failed to perform login!", e);
      setError(`Failed to authenticate! ${e}`);
    } finally {
      loadingMessage.hide();
    }
  };

  return (
    <Grid container component="main" sx={{ height: "100vh" }}>
      <CssBaseline />
      <Grid
        item
        xs={false}
        sm={4}
        md={7}
        sx={{
          backgroundImage: 'url("/sun.jpg")',
          backgroundColor: (t) =>
            t.palette.mode === "light"
              ? t.palette.grey[50]
              : t.palette.grey[900],
          backgroundSize: "cover",
          backgroundPosition: "left",
        }}
      />
      <Grid item xs={12} sm={8} md={5} component={Paper} elevation={6} square>
        <Box
          sx={{
            my: 8,
            mx: 4,
            display: "flex",
            flexDirection: "column",
            alignItems: "center",
          }}
        >
          <Avatar sx={{ m: 1, bgcolor: "secondary.main" }}>
            <LockOutlinedIcon />
          </Avatar>
          <Typography component="h1" variant="h5">
            SolarEnergy
          </Typography>

          {error && <Alert severity="error">{error}</Alert>}

          <Box
            component="form"
            noValidate
            onSubmit={handleSubmit}
            sx={{ mt: 1 }}
          >
            <TextField
              margin="normal"
              required
              fullWidth
              label="Username"
              autoFocus
              value={user}
              onChange={(v) => setUser(v.target.value)}
            />

            <TextField
              margin="normal"
              required
              fullWidth
              label="Password"
              type="password"
              autoComplete="current-password"
              value={password}
              onChange={(v) => setPassword(v.target.value)}
            />

            <Button
              type="submit"
              fullWidth
              variant="contained"
              sx={{ mt: 3, mb: 2 }}
            >
              Sign In
            </Button>

            <Copyright sx={{ mt: 5 }} />
          </Box>
        </Box>
      </Grid>
    </Grid>
  );
}