/**
 * MUI theme - mirrors `reachy_mini_mobile_app/src/theme.ts` so the
 * emotions Space looks like a natural extension of the mobile shell
 * when embedded (same accent, radius, paper / canvas separation).
 *
 * Two prebuilt instances (light + dark) selected at runtime by
 * `App.tsx` based on the URL `?theme` query param, postMessage from a
 * host shell, or `prefers-color-scheme` when standalone. Keeping both
 * prebuilt avoids a visible flash when the user toggles their system
 * appearance.
 */
import { createTheme, type Theme } from '@mui/material/styles';

const ACCENT = '#FF9500';
const RADIUS = 12;
const FONT_FAMILY =
  'Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif';

function buildTheme(mode: 'light' | 'dark'): Theme {
  const isDark = mode === 'dark';
  return createTheme({
    palette: {
      mode,
      primary: { main: ACCENT },
      background: {
        default: isDark ? '#101013' : '#fafafa',
        paper: isDark ? '#1a1a1a' : '#ffffff',
      },
      text: {
        primary: isDark ? '#f5f5f5' : '#111111',
        secondary: isDark ? 'rgba(255,255,255,0.72)' : 'rgba(0,0,0,0.65)',
      },
      divider: isDark ? 'rgba(255,255,255,0.08)' : 'rgba(0,0,0,0.08)',
    },
    typography: {
      fontFamily: FONT_FAMILY,
      button: { textTransform: 'none', fontWeight: 600 },
    },
    shape: { borderRadius: RADIUS },
    components: {
      MuiCssBaseline: {
        styleOverrides: {
          html: {
            backgroundColor: isDark ? '#101013' : '#fafafa',
            minHeight: ['100vh', '100dvh'],
          },
          body: {
            backgroundColor: isDark ? '#101013' : '#fafafa',
            minHeight: ['100vh', '100dvh'],
            margin: 0,
            // Emotions is a single-screen experience; lock body
            // scroll so a stray gesture on the joystick / video feed
            // never bounces the page.
            overscrollBehavior: 'none',
            WebkitTapHighlightColor: 'transparent',
            // App-style "unselectable" baseline: long-press shouldn't
            // pop iOS' text-selection / share callout, double-tap
            // shouldn't highlight a wedge label, etc. We're a control
            // surface, not a document. Form fields opt back in below
            // so future inputs keep their native copy / paste UX.
            userSelect: 'none',
            WebkitUserSelect: 'none',
            WebkitTouchCallout: 'none',
            '& input, & textarea, & [contenteditable="true"]': {
              userSelect: 'text',
              WebkitUserSelect: 'text',
              WebkitTouchCallout: 'default',
            },
          },
          '#root': {
            minHeight: ['100vh', '100dvh'],
            display: 'flex',
            flexDirection: 'column',
          },
        },
      },
      MuiButton: {
        // App-wide default = outlined. Contained / filled buttons read
        // as a heavyweight "primary commitment" in MUI; in this app
        // even the main CTAs are mostly soft decisions (sign in,
        // retry, connect), so we lean on the lighter outlined chrome
        // and let the page composition do the hierarchy work via
        // size + position rather than fill weight. Call sites still
        // override (e.g. `variant="text"` for inline links) when they
        // need a quieter affordance.
        defaultProps: { disableElevation: true, variant: 'outlined' },
        styleOverrides: {
          root: { borderRadius: RADIUS, paddingInline: 20, paddingBlock: 10 },
          // Outlined buttons inherit the divider's neutral grey by
          // default, which makes a primary-coloured outlined button
          // look washed-out next to its text. Lift the border width
          // a touch and inherit the text colour so the outline
          // matches the label hue (primary CTA reads as primary).
          outlined: { borderWidth: 1.5 },
        },
        // MUI v9 removed variant-color combination slots like
        // `outlinedPrimary` from `styleOverrides`. The migration
        // path is the new `variants` API which matches on prop
        // combinations and works the same way at runtime.
        variants: [
          {
            props: { variant: 'outlined', color: 'primary' },
            style: ({ theme }) => ({
              borderColor: theme.palette.primary.main,
              '&:hover': {
                borderWidth: 1.5,
                backgroundColor: `rgba(255, 149, 0, ${
                  theme.palette.mode === 'dark' ? 0.1 : 0.08
                })`,
              },
            }),
          },
        ],
      },
      MuiPaper: {
        styleOverrides: {
          root: { backgroundImage: 'none' },
        },
      },
      MuiCard: {
        styleOverrides: {
          root: { borderRadius: RADIUS },
        },
      },
      MuiTooltip: {
        styleOverrides: {
          tooltip: {
            fontSize: 12,
            paddingBlock: 6,
            paddingInline: 10,
          },
        },
      },
    },
  });
}

export const lightTheme = buildTheme('light');
export const darkTheme = buildTheme('dark');