| 1 | package config |
| 2 | |
| 3 | import ( |
| 4 | "slices" |
| 5 | "strings" |
| 6 | ) |
| 7 | |
| 8 | // stepfunContextWindow is the limit StepFun serves for every model its presets |
| 9 | // list; the API refuses a request above 262144 tokens. |
| 10 | const stepfunContextWindow = 262_144 |
| 11 | |
| 12 | var stepfunPresetIDs = []string{"stepfun", "stepfun-responses", "stepfun-anthropic", "stepfun-api", "stepfun-api-anthropic"} |
| 13 | |
| 14 | // normalizeLegacyStepFunContextWindows gives an installed StepFun preset that |
| 15 | // still has no window the one its preset declares. A zero window turns |
| 16 | // automatic compaction off, so the session grows until the API refuses it. |
| 17 | // Either official host counts, since the region is the user's; a custom |
| 18 | // endpoint, a model StepFun does not serve, or any window already set stays. |
| 19 | func normalizeLegacyStepFunContextWindows(c *Config) bool { |
| 20 | if c == nil { |
| 21 | return false |
| 22 | } |
| 23 | changed := false |
| 24 | for i := range c.Providers { |
| 25 | p := &c.Providers[i] |
| 26 | presetID := strings.TrimSpace(p.PresetID) |
| 27 | if p.ContextWindow != 0 || !slices.Contains(stepfunPresetIDs, presetID) { |
| 28 | continue |
| 29 | } |
| 30 | preset, ok := CuratedProviderPreset(presetID) |
| 31 | if !ok || len(preset.Entries) != 1 { |
| 32 | continue |
| 33 | } |
| 34 | canonical := preset.Entries[0] |
| 35 | if canonical.ContextWindow <= 0 || |
| 36 | !strings.EqualFold(strings.TrimSpace(p.Kind), strings.TrimSpace(canonical.Kind)) || |
| 37 | !stepfunOfficialBaseURL(p.BaseURL, canonical.BaseURL) || |
| 38 | !stepfunServesAll(p.ModelList(), canonical.Models) { |
| 39 | continue |
| 40 | } |
| 41 | p.ContextWindow = canonical.ContextWindow |
| 42 | changed = true |
| 43 | } |
| 44 | return changed |
| 45 | } |
| 46 | |
| 47 | func stepfunOfficialBaseURL(raw, canonical string) bool { |
| 48 | got := normalizedBaseURLForMigration(raw) |
| 49 | want := normalizedBaseURLForMigration(canonical) |
| 50 | return got == want || got == strings.Replace(want, "://api.stepfun.com", "://api.stepfun.ai", 1) |
| 51 | } |
| 52 | |
| 53 | func stepfunServesAll(models, served []string) bool { |
| 54 | if len(models) == 0 { |
| 55 | return false |
| 56 | } |
| 57 | for _, m := range models { |
| 58 | if !slices.Contains(served, strings.TrimSpace(m)) { |
| 59 | return false |
| 60 | } |
| 61 | } |
| 62 | return true |
| 63 | } |
| 64 |