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package rotation
import (
"context"
"database/sql"
"text/template"
"github.com/target/goalert/permission"
"github.com/target/goalert/search"
"github.com/target/goalert/util"
"github.com/target/goalert/util/sqlutil"
"github.com/target/goalert/validation/validate"
"github.com/pkg/errors"
)
// SearchOptions allow filtering and paginating the list of rotations.
type SearchOptions struct {
Search string `json:"s,omitempty"`
After SearchCursor `json:"a,omitempty"`
// Omit specifies a list of rotation IDs to exclude from the results
Omit []string `json:"o,omitempty"`
Limit int `json:"-"`
// FavoritesOnly controls filtering the results to those marked as favorites by FavoritesUserID.
FavoritesOnly bool `json:"b,omitempty"`
// FavoritesFirst indicates that rotations marked as favorite (by FavoritesUserID) should be returned first (before any non-favorites).
FavoritesFirst bool `json:"f,omitempty"`
//FavoritesUserID is the userID associated with the rotation favorite
FavoritesUserID string `json:"u,omitempty"`
}
// SearchCursor is used to indicate a position in a paginated list.
type SearchCursor struct {
Name string `json:"n,omitempty"`
IsFavorite bool `json:"f,omitempty"`
}
var searchTemplate = template.Must(template.New("search").Funcs(search.Helpers()).Parse(`
SELECT
rot.id,
rot.name,
rot.description,
rot.type,
rot.start_time,
rot.shift_length,
rot.time_zone,
fav IS DISTINCT FROM NULL
FROM rotations rot
{{if not .FavoritesOnly }}LEFT {{end}}JOIN user_favorites fav ON rot.id = fav.tgt_rotation_id AND {{if .FavoritesUserID}}fav.user_id = :favUserID{{else}}false{{end}}
WHERE true
{{if .Omit}}
AND NOT rot.id = any(:omit)
{{end}}
{{if .Search}}
AND ({{orderedPrefixSearch "search" "rot.name"}} OR {{contains "search" "rot.description"}} OR {{contains "search" "rot.name"}})
{{end}}
{{if .After.Name}}
AND
{{if not .FavoritesFirst}}
lower(rot.name) > lower(:afterName)
{{else if .After.IsFavorite}}
((fav IS DISTINCT FROM NULL AND lower(rot.name) > lower(:afterName)) OR fav isnull)
{{else}}
(fav isnull AND lower(rot.name) > lower(:afterName))
{{end}}
{{end}}
ORDER BY {{ .OrderBy }}
LIMIT {{.Limit}}
`))
type renderData SearchOptions
func (opts renderData) OrderBy() string {
if opts.FavoritesFirst {
return "fav isnull, lower(rot.name)"
}
return "lower(rot.name)"
}
func (opts renderData) Normalize() (*renderData, error) {
if opts.Limit == 0 {
opts.Limit = search.DefaultMaxResults
}
err := validate.Many(
validate.Search("Search", opts.Search),
validate.Range("Limit", opts.Limit, 0, search.MaxResults),
validate.ManyUUID("Omit", opts.Omit, 50),
)
if opts.After.Name != "" {
err = validate.Many(err, validate.IDName("After.Name", opts.After.Name))
}
if opts.FavoritesOnly || opts.FavoritesFirst || opts.FavoritesUserID != "" {
err = validate.Many(err, validate.UUID("FavoritesUserID", opts.FavoritesUserID))
}
if err != nil {
return nil, err
}
return &opts, err
}
func (opts renderData) QueryArgs() []sql.NamedArg {
return []sql.NamedArg{
sql.Named("search", opts.Search),
sql.Named("afterName", opts.After.Name),
sql.Named("omit", sqlutil.UUIDArray(opts.Omit)),
sql.Named("favUserID", opts.FavoritesUserID),
}
}
func (s *Store) Search(ctx context.Context, opts *SearchOptions) ([]Rotation, error) {
if opts == nil {
opts = &SearchOptions{}
}
userCheck := permission.User
if opts.FavoritesUserID != "" {
userCheck = permission.MatchUser(opts.FavoritesUserID)
}
err := permission.LimitCheckAny(ctx, permission.System, userCheck)
if err != nil {
return nil, err
}
data, err := (*renderData)(opts).Normalize()
if err != nil {
return nil, err
}
query, args, err := search.RenderQuery(ctx, searchTemplate, data)
if err != nil {
return nil, errors.Wrap(err, "render query")
}
rows, err := s.db.QueryContext(ctx, query, args...)
if errors.Is(err, sql.ErrNoRows) {
return nil, nil
}
if err != nil {
return nil, err
}
defer rows.Close()
var result []Rotation
var r Rotation
var tz string
for rows.Next() {
err = rows.Scan(&r.ID, &r.Name, &r.Description, &r.Type, &r.Start, &r.ShiftLength, &tz, &r.isUserFavorite)
if err != nil {
return nil, err
}
loc, err := util.LoadLocation(tz)
if err != nil {
return nil, err
}
r.Start = r.Start.In(loc)
result = append(result, r)
}
return result, nil
}
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