import {
  Check,
  FileSignature,
  FileText,
  ShieldCheck,
  Truck,
  Workflow,
  type LucideIcon,
} from "lucide-react";
import { Paper, Group, Stack, Text, Box } from "@mantine/core";

import {
  CONTRACT_WORKFLOW_STAGES,
  getContractWorkflowStageIndex,
} from "@/features/contracts/contract-status.config";
import { SectionCard } from "@/components/bookings/detail/SectionCard";
import {
  BRAND_GREEN,
  detailStyles,
} from "@/components/bookings/detail/booking-detail.styles";

const STAGE_ICONS: LucideIcon[] = [
  FileText,
  FileSignature,
  FileSignature,
  ShieldCheck,
  Truck,
  Check,
];

interface ContractWorkflowStepperProps {
  status: string;
  title: string;
  description: string;
}

export function ContractWorkflowStepper({
  status,
  title,
  description,
}: ContractWorkflowStepperProps) {
  const currentStage = getContractWorkflowStageIndex(status);
  const isTerminal = currentStage < 0;

  return (
    <SectionCard icon={Workflow} title="Workflow progress">
      <Group gap={0} wrap="nowrap" align="flex-start" mb="lg">
        {CONTRACT_WORKFLOW_STAGES.map((stage, index) => {
          const Icon = STAGE_ICONS[index] ?? FileText;
          const isComplete = !isTerminal && index < currentStage;
          const isActive = !isTerminal && index === currentStage;
          const isLast = index === CONTRACT_WORKFLOW_STAGES.length - 1;

          return (
            <Box
              key={stage.label}
              style={{ flex: isLast ? "0 0 auto" : 1, minWidth: 0 }}
            >
              <Group gap={0} wrap="nowrap" align="center">
                <Stack gap={6} align="center" style={{ flexShrink: 0 }}>
                  <Box
                    style={{
                      display: "flex",
                      alignItems: "center",
                      justifyContent: "center",
                      width: 34,
                      height: 34,
                      borderRadius: "50%",
                      background: isComplete
                        ? BRAND_GREEN
                        : isActive
                          ? "white"
                          : "var(--mantine-color-gray-1)",
                      border: isActive
                        ? `2px solid ${BRAND_GREEN}`
                        : isComplete
                          ? "2px solid transparent"
                          : "2px solid var(--mantine-color-gray-2)",
                      color: isComplete
                        ? "white"
                        : isActive
                          ? "var(--freight-brand-dark)"
                          : "var(--mantine-color-gray-5)",
                      transition: "all 0.2s ease",
                    }}
                  >
                    {isComplete ? (
                      <Check size={16} strokeWidth={3} />
                    ) : (
                      <Icon size={15} />
                    )}
                  </Box>
                  <Text
                    size="xs"
                    fw={isActive ? 600 : 500}
                    c={isActive ? "edr-green.7" : isComplete ? "dark" : "dimmed"}
                    ta="center"
                    style={{ whiteSpace: "nowrap" }}
                  >
                    {stage.label}
                  </Text>
                </Stack>
                {!isLast && (
                  <Box
                    style={{
                      flex: 1,
                      height: 2,
                      marginInline: 8,
                      marginBottom: 20,
                      borderRadius: 2,
                      background: isComplete
                        ? BRAND_GREEN
                        : "var(--mantine-color-gray-2)",
                    }}
                  />
                )}
              </Group>
            </Box>
          );
        })}
      </Group>

      <Paper
        radius="md"
        withBorder
        p="md"
        style={
          isTerminal
            ? detailStyles.statusBannerTerminal
            : detailStyles.statusBanner
        }
      >
        <Text size="sm" fw={600} c={isTerminal ? "red.7" : "dark"}>
          {title}
        </Text>
        <Text size="sm" c="dimmed" mt={4}>
          {description}
        </Text>
      </Paper>
    </SectionCard>
  );
}