import React from "react";
import { Box, Paper, Typography, Button, IconButton, Skeleton, Tooltip } from "@mui/material";
import DeleteOutlineIcon from "@mui/icons-material/DeleteOutline";
import VisibilityIcon from "@mui/icons-material/Visibility";
import CachedIcon from "@mui/icons-material/Cached";
import { ListCellRenderer } from "../../react-openapi";
import type { ReportFieldConfigs } from "./types";

interface ReportListProps {
  reports: any[];
  loading: boolean;
  fields: ReportFieldConfigs | null;
  selectedId: string | null;
  onView: (id: string) => void;
  onRegenerate: (report: any) => void;
  onDelete: (id: string) => void;
}

export function ReportList({ reports, loading, fields, selectedId, onView, onRegenerate, onDelete }: ReportListProps) {
  if (loading && reports.length === 0) {
    return (
      <Box sx={{ display: "flex", flexDirection: "column", gap: 1.5 }}>
        {[0, 1, 2].map((i) => (
          <Skeleton key={i} variant="rounded" height={88} sx={{ borderRadius: 2 }} />
        ))}
      </Box>
    );
  }

  return (
    <Box sx={{ display: "flex", flexDirection: "column", gap: 1.5 }}>
      {reports.map((report) => {
        const q = report.query ?? {};
        const range = q.start_date || q.end_date ? `range ${q.start_date || "…"} → ${q.end_date || "…"}` : null;
        const dims = Array.isArray(q.group_dims) ? q.group_dims.join(", ") : "";
        const granularities = Array.isArray(q.granularities) ? q.granularities.join(", ") : "";
        const accounts = Array.isArray(q.accounts) ? `${q.accounts.length} account${q.accounts.length === 1 ? "" : "s"}` : "all accounts";
        const amounts =
          q.min_amount != null || q.max_amount != null
            ? `amount ${q.min_amount ?? "0"} → ${q.max_amount ?? "∞"}`
            : null;
        return (
          <Paper
            key={report.id}
            variant="outlined"
            sx={{
              p: 2,
              borderRadius: 2,
              borderColor: selectedId === report.id ? "primary.main" : "divider",
              transition: "border-color 160ms ease",
              "&:hover": { borderColor: "primary.light" },
            }}
          >
            <Box sx={{ display: "flex", alignItems: "center", gap: 2 }}>
              <Box sx={{ flex: "1 1 260px", minWidth: 0 }}>
                <Typography variant="body1" fontWeight={600} noWrap sx={{ fontSize: "0.9375rem" }}>
                  {report.name || report.id}
                </Typography>
                <Box sx={{ display: "flex", alignItems: "center", gap: 1, flexWrap: "wrap", mt: 0.25 }}>
                  <Typography variant="caption" color="text.secondary">
                    {granularities}
                  </Typography>
                  <Typography variant="caption" color="text.disabled">
                    /
                  </Typography>
                  <Typography variant="caption" color="text.secondary">
                    {dims}
                  </Typography>
                  {range && (
                    <Typography variant="caption" color="text.disabled">
                      {range}
                    </Typography>
                  )}
                </Box>
                <Box sx={{ display: "flex", gap: 1.5, mt: 0.5 }}>
                  <Typography variant="caption" color="text.secondary">
                    {accounts}
                  </Typography>
                  {amounts && (
                    <Typography variant="caption" color="text.secondary">
                      {amounts}
                    </Typography>
                  )}
                </Box>
              </Box>

              {fields && (
                <Box sx={{ ml: "auto", flexShrink: 0, color: "text.secondary" }}>
                  <ListCellRenderer field={fields.generatedAt} value={report.generated_at} />
                </Box>
              )}

              <Box sx={{ display: "flex", gap: 0.5, flexShrink: 0 }}>
                <Button size="small" variant="contained" startIcon={<VisibilityIcon />} onClick={() => onView(report.id)}>
                  View
                </Button>
                <Button
                  size="small"
                  variant="outlined"
                  startIcon={<CachedIcon />}
                  onClick={() => onRegenerate(report)}
                >
                  Regenerate
                </Button>
                <Tooltip title="Delete">
                  <IconButton aria-label="Delete report" onClick={() => onDelete(report.id)}>
                    <DeleteOutlineIcon fontSize="small" />
                  </IconButton>
                </Tooltip>
              </Box>
            </Box>
          </Paper>
        );
      })}
    </Box>
  );
}