'use strict'

const Joi = require('joi')
const apiSchema = require('../../schemas/api')
const errorSchema = require('../../schemas/errors')
const groupingSchema = require('../../schemas/groupings')
const params = require('../../schemas/params')

const pluginConfig = {
    handlerType: 'grouping',
    docs: {
        description: 'active memberships',
        notes: 'A list of groupings with active membership',
    },
}

const validators = {
    /** Validate the header (cookie check) */
    // headers: true,

    /** Validate the route params (/active/{thing}) */
    params: params.profileId,

    /** Validate the route query (/active/{thing}?limit=10&offset=10) */
    query: Joi.object({ type: Joi.string().lowercase().min(6).max(11) }),

    /** Validate the incoming payload (POST method) */
    // payload: true,
}

const responseSchemas = {
    single: groupingSchema.single,
    list: groupingSchema.listWithProfiles,
    error: errorSchema.single,
}

const _activeGroupingIds = allMemberships => {
    const active = {}
    allMemberships.forEach(membership => {
        if (!membership.is_active) return
        if (!active[membership.grouping_id]) {
            active[membership.grouping_id] = []
        }
        active[membership.grouping_id].push(membership)
    })
    const ids = []
    Object.values(active).forEach(profileListInGrouping => {
        if (profileListInGrouping.length == 2) {
            ids.push(profileListInGrouping[0].grouping_id)
        }
    })
    return ids
}

module.exports = {
    method: 'GET',
    path: '/{profile_id}',
    options: {
        ...pluginConfig.docs,
        tags: ['api'],
        /** Protect this route with authentication? */
        auth: false,
        cors: true,
        handler: async function (request, h) {
            const { membershipService, profileService, userService } =
                request.server.services()
            const membershipType = request.query.type

            const profileId = request.params.profile_id
            const groupings = await membershipService.findGroupingsByProfileId(
                profileId,
                membershipType,
            )
            if (!groupings.length) {
                return {
                    ok: true,
                    handler: pluginConfig.handlerType,
                    data: [],
                }
            }
            const groupingIds = groupings.map(grouping => grouping.grouping_id)
            const memberships =
                await membershipService.findMemberships(groupingIds)
            let profileIds = memberships
                .filter(membership => membership.profile_id !== profileId)
                .map(membership => membership.profile_id)
            profileIds =
                !profileIds.length || profileIds[0] === undefined
                    ? []
                    : profileIds
            /** Assemble complete profiles to reference and pass */
            const completedProfiles = !profileIds.length
                ? []
                : await profileService.getProfilesFor(profileIds, 'participant')
            /**
             * Heavily process the result by storing just a profile_id
             * and attach complete profiles
             * !: This still assumes only ONE other profile
             * TODO: should be refactored to many other profiles
             */
            const reformattedGroupings =
                groupings.length && completedProfiles.length
                    ? groupings.map(grouping => {
                          const otherPid = grouping.profiles.find(
                              p => p.profile_id != profileId,
                          ).profile_id
                          grouping.profile = completedProfiles.find(
                              p => otherPid == p.profile_id,
                          )
                          grouping.is_paired = _activeGroupingIds(
                              memberships,
                          ).includes(grouping.grouping_id)
                          delete grouping.profiles
                          return grouping
                      })
                    : []
            /** Grabs revealTags */
            const revealTags =
                profileIds.length && groupingIds.length
                    ? await profileService.getTagsFor(
                          profileIds,
                          groupingIds,
                          'reveal',
                      )
                    : undefined
            console.log('revealTags :=>', revealTags)

            /** If the revealTags exist, the completedProfile's hidden info is
             * removed and replaced with the completedProfile's user information
             * Otherwise the completedProfiles remain unchanged
             */
            const user = completedProfiles.length
                ? await userService.findById(
                      completedProfiles.map(p => p.user_id),
                  )
                : undefined
            console.log('user :=>', user)

            // TODO: Refactor this. Is it safe to always use completedProfiles[0]?
            if (revealTags && user) {
                revealTags.forEach(t => {
                    console.log('t :=>', t)
                    if (!t.tag.tag_description) return
                    completedProfiles[0][t.tag.tag_description] =
                        user[t.tag.tag_description]
                })
            }

            try {
                return {
                    ok: true,
                    handler: pluginConfig.handlerType,
                    data: reformattedGroupings,
                }
            } catch (err) {
                return {
                    ok: false,
                    handler: pluginConfig.handlerType,
                    data: { error: `${err}` },
                }
            }
        },

        /** Validate based on validators object */
        validate: {
            ...validators,
            failAction: 'log',
        },

        /** Validate the server response */
        response: {
            schema: apiSchema.single
                .append({
                    data: responseSchemas.list,
                })
                .label('grouping_list_res'),
        },
    },
}