refactor(config): rename oauth-model-mappings to oauth-model-alias

internal/watcher/diff/oauth_model_alias.go

@@ -0,0 +1,101 @@
+package diff
+
+import (
+	"crypto/sha256"
+	"encoding/hex"
+	"fmt"
+	"sort"
+	"strings"
+
+	"github.com/router-for-me/CLIProxyAPI/v6/internal/config"
+)
+
+type OAuthModelAliasSummary struct {
+	hash  string
+	count int
+}
+
+// SummarizeOAuthModelAlias summarizes OAuth model alias per channel.
+func SummarizeOAuthModelAlias(entries map[string][]config.OAuthModelAlias) map[string]OAuthModelAliasSummary {
+	if len(entries) == 0 {
+		return nil
+	}
+	out := make(map[string]OAuthModelAliasSummary, len(entries))
+	for k, v := range entries {
+		key := strings.ToLower(strings.TrimSpace(k))
+		if key == "" {
+			continue
+		}
+		out[key] = summarizeOAuthModelAliasList(v)
+	}
+	if len(out) == 0 {
+		return nil
+	}
+	return out
+}
+
+// DiffOAuthModelAliasChanges compares OAuth model alias maps.
+func DiffOAuthModelAliasChanges(oldMap, newMap map[string][]config.OAuthModelAlias) ([]string, []string) {
+	oldSummary := SummarizeOAuthModelAlias(oldMap)
+	newSummary := SummarizeOAuthModelAlias(newMap)
+	keys := make(map[string]struct{}, len(oldSummary)+len(newSummary))
+	for k := range oldSummary {
+		keys[k] = struct{}{}
+	}
+	for k := range newSummary {
+		keys[k] = struct{}{}
+	}
+	changes := make([]string, 0, len(keys))
+	affected := make([]string, 0, len(keys))
+	for key := range keys {
+		oldInfo, okOld := oldSummary[key]
+		newInfo, okNew := newSummary[key]
+		switch {
+		case okOld && !okNew:
+			changes = append(changes, fmt.Sprintf("oauth-model-alias[%s]: removed", key))
+			affected = append(affected, key)
+		case !okOld && okNew:
+			changes = append(changes, fmt.Sprintf("oauth-model-alias[%s]: added (%d entries)", key, newInfo.count))
+			affected = append(affected, key)
+		case okOld && okNew && oldInfo.hash != newInfo.hash:
+			changes = append(changes, fmt.Sprintf("oauth-model-alias[%s]: updated (%d -> %d entries)", key, oldInfo.count, newInfo.count))
+			affected = append(affected, key)
+		}
+	}
+	sort.Strings(changes)
+	sort.Strings(affected)
+	return changes, affected
+}
+
+func summarizeOAuthModelAliasList(list []config.OAuthModelAlias) OAuthModelAliasSummary {
+	if len(list) == 0 {
+		return OAuthModelAliasSummary{}
+	}
+	seen := make(map[string]struct{}, len(list))
+	normalized := make([]string, 0, len(list))
+	for _, alias := range list {
+		name := strings.ToLower(strings.TrimSpace(alias.Name))
+		aliasVal := strings.ToLower(strings.TrimSpace(alias.Alias))
+		if name == "" || aliasVal == "" {
+			continue
+		}
+		key := name + "->" + aliasVal
+		if alias.Fork {
+			key += "|fork"
+		}
+		if _, exists := seen[key]; exists {
+			continue
+		}
+		seen[key] = struct{}{}
+		normalized = append(normalized, key)
+	}
+	if len(normalized) == 0 {
+		return OAuthModelAliasSummary{}
+	}
+	sort.Strings(normalized)
+	sum := sha256.Sum256([]byte(strings.Join(normalized, "|")))
+	return OAuthModelAliasSummary{
+		hash:  hex.EncodeToString(sum[:]),
+		count: len(normalized),
+	}
+}