package query

import (
	"context"
	"strings"
	"time"

	"forge.cadoles.com/Cadoles/fake-sms/internal/model"
	"forge.cadoles.com/Cadoles/fake-sms/internal/storm"
	stormdb "github.com/asdine/storm/v3"
	"github.com/asdine/storm/v3/q"
	"github.com/pkg/errors"
	"gitlab.com/wpetit/goweb/cqrs"
	"gitlab.com/wpetit/goweb/middleware/container"
)

type OutboxSearch struct {
	Recipient string
	Body      string
	After     time.Time
	Before    time.Time
}

type GetOutboxRequest struct {
	OrderBy string
	Limit   int
	Skip    int
	Reverse bool
	Search  *OutboxSearch
}

type OutboxData struct {
	Messages []*model.SMS
}

func HandleGetOutbox(ctx context.Context, qry cqrs.Query) (interface{}, error) {
	req, ok := qry.Request().(*GetOutboxRequest)
	if !ok {
		return nil, cqrs.ErrUnexpectedRequest
	}

	ctn, err := container.From(ctx)
	if err != nil {
		return nil, errors.Wrap(err, "could not retrieve service container")
	}

	db, err := storm.From(ctn)
	if err != nil {
		return nil, errors.Wrap(err, "could not retrieve storm service")
	}

	messages := make([]*model.SMS, 0)

	var query stormdb.Query

	if req.Search != nil {
		matchers := make([]q.Matcher, 0)

		if req.Search.Body != "" {
			matchers = append(matchers, q.Or(
				q.Re("Body", req.Search.Body),
			))
		}

		query = db.Select(matchers...)
	} else {
		query = db.Select()
	}

	if req.OrderBy != "" {
		query = query.OrderBy(req.OrderBy)
	} else {
		query = query.OrderBy("SentAt").Reverse()
	}

	if req.Reverse {
		query = query.Reverse()
	}

	if req.Limit != 0 {
		query = query.Limit(req.Limit)
	}

	if req.Skip != 0 {
		query = query.Limit(req.Skip)
	}

	if err := query.Find(&messages); err != nil {
		if err == storm.ErrNotFound {
			return &OutboxData{messages}, nil
		}

		return nil, errors.Wrap(err, "could not retrieve emails")
	}

	if req.Search == nil {
		return &OutboxData{messages}, nil
	}

	filtered := make([]*model.SMS, 0, len(messages))

	for _, sms := range messages {
		match := true

		if req.Search.Recipient != "" {
			match = strings.Contains(sms.Recipient, req.Search.Recipient)
		}

		if !req.Search.After.IsZero() && !sms.SentAt.After(req.Search.After) {
			match = false
		}

		if !req.Search.Before.IsZero() && !sms.SentAt.Before(req.Search.Before) {
			match = false
		}

		if match {
			filtered = append(filtered, sms)
		}
	}

	return &OutboxData{filtered}, nil
}