90 lines
2.9 KiB
Go
90 lines
2.9 KiB
Go
package models
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import (
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"strings"
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"time"
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)
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// CatalogueProduct maps to the per-brand tables (brand_dabur, brand_nestle, ...)
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// in the separate pgvector catalogue database. The `embedding` vector column
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// is intentionally not mapped here — it is never needed in an API response.
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type CatalogueProduct struct {
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ID int64 `json:"id"`
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Brand string `json:"brand"`
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ProductName string `json:"product_name"`
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Title string `json:"title,omitempty"`
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Description string `json:"description,omitempty"`
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Category string `json:"category,omitempty"`
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ImageID string `json:"image_id,omitempty"`
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Images []string `json:"images,omitempty"`
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Size string `json:"size,omitempty"`
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VariantKey string `json:"variant_key,omitempty"`
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ProductSKU string `json:"product_sku,omitempty"`
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SKUSource string `json:"sku_source,omitempty"`
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PriceRange string `json:"price_range,omitempty"`
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Providers PGStringArray `json:"providers,omitempty"`
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FSSAILicense string `json:"fssai_license,omitempty"`
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Highlights PGStringArray `json:"highlights,omitempty"`
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Nutrients PGStringArray `json:"nutrients,omitempty"`
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// The structured panel, when the catalogue carries one. Nil falls back to
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// parsing Nutrients above — see NutritionFromLines.
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Nutrition *NutritionPanel `json:"nutrition,omitempty"`
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SearchQuery string `json:"search_query,omitempty"`
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CreatedAt time.Time `json:"created_at,omitempty"`
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UpdatedAt time.Time `json:"updated_at,omitempty"`
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}
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// CatalogueBrand describes a brand available in the catalogue DB.
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type CatalogueBrand struct {
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Brand string `json:"brand"`
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ProductCount int64 `json:"product_count"`
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}
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// PGStringArray is a plain []string used for catalogue array fields
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// (providers, highlights, nutrients) in JSON responses.
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type PGStringArray []string
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// ParsePGArray parses a Postgres text[] literal (e.g. "{Amazon,Flipkart}")
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// into a Go []string. GORM's raw-scan-into-struct silently drops slice-kind
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// destination fields, so array columns are queried as `col::text` and
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// converted with this function after scanning, rather than scanned directly.
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func ParsePGArray(s string) PGStringArray {
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s = strings.TrimSpace(s)
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if s == "" || s == "{}" {
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return PGStringArray{}
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}
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if strings.HasPrefix(s, "{") && strings.HasSuffix(s, "}") {
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s = s[1 : len(s)-1]
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}
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var result PGStringArray
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var buf strings.Builder
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inQuotes := false
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escaped := false
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for _, r := range s {
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switch {
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case escaped:
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buf.WriteRune(r)
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escaped = false
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case r == '\\':
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escaped = true
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case r == '"':
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inQuotes = !inQuotes
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case r == ',' && !inQuotes:
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result = append(result, buf.String())
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buf.Reset()
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default:
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buf.WriteRune(r)
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}
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}
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result = append(result, buf.String())
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for i, v := range result {
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if v == "NULL" {
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result[i] = ""
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}
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}
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return result
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}
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