import { useValidatedParams, z, zh } from 'h3-zod';
import prisma from '~~/lib/prisma';

export default defineEventHandler(async (event) => {
  // TODO: re-enable perms
  // const user = await requireUserSession(event);
  //
  // if (user.user.role !== 'ADMIN') {
  //   throw createError({
  //     status: 403,
  //     statusText: 'Not allowed!'
  //   });
  // }
  // const userId = user.user.id;
  const { huntId } = await useValidatedParams(
    event,
    z.object({
      huntId: zh.numAsString
    })
  );

  const _hunt = await prisma.hunt.findUnique({
    where: {
      id: huntId
      // OR: [
      //   {
      //     creatorId: userId
      //   },
      //   {
      //     members: {
      //       some: {
      //         memberId: userId
      //       }
      //     }
      //   }
      // ]
    },
    select: {
      id: true,
      name: true,
      start: true,
      end: true,

      _count: {
        select: {
          teams: true,
          members: true,
          quests: true
        }
      },

      teams: {
        select: {
          _count: {
            select: {
              members: true,
              answers: {
                where: {
                  score: { gt: 0 }
                }
              }
            }
          },
          id: true,
          name: true,
          description: true,
          answers: {
            select: {
              score: true
            },
            where: {
              score: { not: null }
            }
          }
        }
      },

      quests: {
        select: {
          id: true,
          title: true,
          question: true,
          textSolution: true,
          points: true,
          extraPoints: true,

          answers: {
            select: {
              id: true,
              text: true,
              score: true,

              picture: {
                select: {
                  url: true,
                  createdAt: true,
                  creator: {
                    select: {
                      id: true,
                      name: true
                    }
                  }
                }
              },
              team: {
                select: {
                  id: true,
                  name: true
                }
              }
            },
            where: {
              showcase: true
            },
            orderBy: [
              { rankingValue: { sort: 'asc', nulls: 'last' } },
              { score: { sort: 'asc', nulls: 'last' } },
              { createdAt: 'asc' }
            ]
          }
        },
        where: {
          OR: [
            {
              answers: {
                some: {
                  showcase: true
                }
              }
            }
            // TODO: showcase solutions to quests
            // {
            //   textSolution: { not: null }
            // }
          ]
        }
      }
    }
  });

  if (!_hunt) {
    throw createError({ status: 404, statusText: 'Not found!' });
  }

  const { teams, ...hunt } = _hunt;

  const userCount = teams.reduce(
    (sum, team) => sum + team._count.members + 1,
    0
  );

  const leaderboard = teams
    .map(({ name, id, description, answers, _count }) => ({
      name,
      id,
      description,
      answers: _count.answers,
      score: answers.reduce((sum, a) => sum + (a.score || 0), 0)
    }))
    .toSorted((a, b) => b.score - a.score);

  const totalScore = leaderboard.reduce((sum, team) => sum + team.score, 0);

  const pictureCount = await prisma.file.count({
    where: {
      answer: {
        quest: {
          huntId
        }
      }
    }
  });

  return {
    userCount,
    pictureCount,
    totalScore,
    leaderboard,
    ...hunt
  };
});