tauraamui/kvs

package main

import (
    "fmt"

    "github.com/google/uuid"
    "github.com/tauraamui/kvs/v2"
    "github.com/tauraamui/kvs/v2/storage"
)

type SmallChild struct {
    ID           uint32 `mdb:"ignore"`
    UUID         kvs.UUID
    HungryMetric uint32
    Norished     bool
}

type Cake struct {
    ID       uint32 `mdb:"ignore"`
    UUID     kvs.UUID
    Type     string
    Calories int
}

func (b Cake) TableName() string { return "cakes" }

type Candle struct {
    Cake kvs.UUID
    ID   uint32 `mdb:"ignore"`
    Lit  bool
}

func (b Candle) TableName() string { return "candles" }

func hierarchy() {
    db, err := kvs.NewMemKVDB()
    if err != nil {
        panic(err)
    }
    defer db.Close()

    store := storage.New(db)
    defer store.Close()

    child := SmallChild{
        UUID:         uuid.New(),
        HungryMetric: 100,
    }

    disguistingVeganCake := Cake{UUID: uuid.New(), Type: "INEDIBLE", Calories: -38}
    healthyishCarrotCake := Cake{UUID: uuid.New(), Type: "CARROT", Calories: 280}
    redVelvetCake := Cake{UUID: uuid.New(), Type: "RED_VELVET", Calories: 410}

    store.Save(child.UUID, &disguistingVeganCake)
    store.Save(child.UUID, &healthyishCarrotCake)
    store.Save(child.UUID, &redVelvetCake)

    store.Save(disguistingVeganCake.UUID, &Candle{Cake: disguistingVeganCake.UUID, Lit: true})
    store.Save(healthyishCarrotCake.UUID, &Candle{Cake: healthyishCarrotCake.UUID, Lit: true})
    store.Save(redVelvetCake.UUID, &Candle{Cake: redVelvetCake.UUID, Lit: true})

    bs, err := storage.LoadAll[Cake](store, child.UUID)
    for _, cake := range bs {
        fmt.Printf("ROWID: %d, %+v\n", cake.ID, cake)

        candles, err := storage.LoadAll[Cake](store, cake.UUID)
        if err != nil {
            panic(err)
        }

        for _, candle := range candles {
            fmt.Printf("ROWID: %d, %+v\n", candle.ID, candle)
        }
    }
}