add web service

internal/config/config.go

@@ -0,0 +1,134 @@
+package config
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/BurntSushi/toml"
+)
+
+type Config struct {
+	Memos    MemosConfig    `toml:"memos"`
+	Database DatabaseConfig `toml:"database"`
+	Search   SearchConfig   `toml:"search"`
+	Telegram TelegramConfig `toml:"telegram"`
+	Web      WebConfig      `toml:"web"`
+	General  GeneralConfig  `toml:"general"`
+}
+
+type MemosConfig struct {
+	URL   string `toml:"url"`
+	Token string `toml:"token"`
+}
+
+type DatabaseConfig struct {
+	Path string `toml:"path"`
+}
+
+type SearchConfig struct {
+	CooldownDays        int         `toml:"cooldown_days"`
+	RelaxedCooldownDays int         `toml:"relaxed_cooldown_days"`
+	PageSize            int         `toml:"page_size"`
+	MaxYearsBack        int         `toml:"max_years_back"`
+	PreferOlder         bool        `toml:"prefer_older"`
+	TierWeights         TierWeights `toml:"tier_weights"`
+}
+
+type TierWeights struct {
+	Tier1 int `toml:"tier1"`
+	Tier2 int `toml:"tier2"`
+	Tier3 int `toml:"tier3"`
+	Tier4 int `toml:"tier4"`
+	Tier5 int `toml:"tier5"`
+	Tier6 int `toml:"tier6"`
+	Tier7 int `toml:"tier7"`
+}
+
+func (tw TierWeights) Sum() int {
+	return tw.Tier1 + tw.Tier2 + tw.Tier3 + tw.Tier4 + tw.Tier5 + tw.Tier6 + tw.Tier7
+}
+
+func (tw TierWeights) AsSlice() [7]int {
+	return [7]int{tw.Tier1, tw.Tier2, tw.Tier3, tw.Tier4, tw.Tier5, tw.Tier6, tw.Tier7}
+}
+
+type TelegramConfig struct {
+	Token  string `toml:"token"`
+	ChatID int64  `toml:"chat_id"`
+	SendAt string `toml:"send_at"`
+}
+
+type WebConfig struct {
+	Listen string `toml:"listen"`
+}
+
+type GeneralConfig struct {
+	Timezone string `toml:"timezone"`
+	LogLevel string `toml:"log_level"`
+}
+
+func Load(path string) (*Config, error) {
+	data, err := os.ReadFile(path)
+	if err != nil {
+		return nil, fmt.Errorf("read config: %w", err)
+	}
+
+	var cfg Config
+	if err := toml.Unmarshal(data, &cfg); err != nil {
+		return nil, fmt.Errorf("parse config: %w", err)
+	}
+
+	setDefaults(&cfg)
+
+	if err := validate(&cfg); err != nil {
+		return nil, fmt.Errorf("validate config: %w", err)
+	}
+
+	return &cfg, nil
+}
+
+func setDefaults(cfg *Config) {
+	if cfg.Database.Path == "" {
+		cfg.Database.Path = "remembos.db"
+	}
+	if cfg.Search.CooldownDays == 0 {
+		cfg.Search.CooldownDays = 90
+	}
+	if cfg.Search.RelaxedCooldownDays == 0 {
+		cfg.Search.RelaxedCooldownDays = 30
+	}
+	if cfg.Search.PageSize == 0 {
+		cfg.Search.PageSize = 50
+	}
+	if cfg.Search.MaxYearsBack == 0 {
+		cfg.Search.MaxYearsBack = 10
+	}
+	if cfg.Search.TierWeights.Sum() == 0 {
+		cfg.Search.TierWeights = TierWeights{
+			Tier1: 35, Tier2: 15, Tier3: 15,
+			Tier4: 12, Tier5: 10, Tier6: 5, Tier7: 8,
+		}
+	}
+	if cfg.Web.Listen == "" {
+		cfg.Web.Listen = "127.0.0.1:8080"
+	}
+	if cfg.General.Timezone == "" {
+		cfg.General.Timezone = "Europe/Moscow"
+	}
+	if cfg.General.LogLevel == "" {
+		cfg.General.LogLevel = "info"
+	}
+}
+
+func validate(cfg *Config) error {
+	if cfg.Memos.URL == "" {
+		return fmt.Errorf("memos.url is required")
+	}
+	if cfg.Memos.Token == "" {
+		return fmt.Errorf("memos.token is required")
+	}
+	if sum := cfg.Search.TierWeights.Sum(); sum != 100 {
+		return fmt.Errorf("search.tier_weights must sum to 100, got %d", sum)
+	}
+	return nil
+}