1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
|
package comic
import (
"context"
"errors"
"fmt"
"strings"
"codeberg.org/snonux/comicforge/internal/provider"
)
// GeneratorConfig configures story generation.
type GeneratorConfig struct {
TextProvider provider.TextProvider
Prompts PromptRenderer
Language string
Script string
Theme string
Genres []string
}
// Generator produces the comic story text, bible, title, and panel script.
type Generator struct {
textProvider provider.TextProvider
prompts PromptRenderer
language string
script string
theme string
genres []string
initErr error
}
var _ = (*Generator)(nil)
// NewGenerator creates a new story generator.
func NewGenerator(cfg *GeneratorConfig) *Generator {
g := &Generator{
language: "Bulgarian",
script: "Cyrillic",
genres: defaultStoryGenres,
}
if cfg == nil {
g.initErr = errors.New("generator config is required")
return g
}
g.textProvider = cfg.TextProvider
g.prompts = cfg.Prompts
g.language = orDefault(cfg.Language, g.language)
g.script = orDefault(cfg.Script, g.script)
g.theme = cfg.Theme
if len(cfg.Genres) > 0 {
g.genres = append([]string(nil), cfg.Genres...)
}
if g.textProvider == nil {
g.initErr = fmt.Errorf("%w: text provider", ErrMissingProvider)
}
if g.prompts == nil {
g.initErr = errors.Join(g.initErr, fmt.Errorf("%w: prompt renderer", ErrMissingProvider))
}
return g
}
// Generate produces only the story text.
func (g *Generator) Generate(ctx context.Context, entries []WordEntry) (string, error) {
if err := g.ready(); err != nil {
return "", err
}
prompt, err := g.renderStoryPrompt(storyPromptTemplate, entries)
if err != nil {
return "", err
}
ctx, cancel := withTimeout(ctx, storyTimeout)
defer cancel()
text, err := g.textProvider.GenerateText(ctx, prompt)
if err != nil {
return "", fmt.Errorf("generate story: %w", err)
}
text = strings.TrimSpace(text)
if text == "" {
return "", fmt.Errorf("no story content returned")
}
if err := validateTextScript("story text", text, g.script); err != nil {
return "", err
}
if err := validateNoPromptLeakage("story text", text); err != nil {
return "", err
}
return text, nil
}
// GenerateFull produces the combined story, bible, title, and panel script.
func (g *Generator) GenerateFull(ctx context.Context, entries []WordEntry) (GenerateResult, error) {
if err := g.ready(); err != nil {
return GenerateResult{}, err
}
prompt, err := g.renderStoryPrompt(storyFullPromptTemplate, entries)
if err != nil {
return GenerateResult{}, err
}
ctx, cancel := withTimeout(ctx, storyTimeout)
defer cancel()
text, err := g.textProvider.GenerateText(ctx, prompt)
if err != nil {
return GenerateResult{}, fmt.Errorf("generate story bundle: %w", err)
}
text = strings.TrimSpace(text)
if text == "" {
return GenerateResult{}, fmt.Errorf("no content returned")
}
result := parseGenerateResult(text)
if err := validateGeneratedResult(result, g.script); err != nil {
return GenerateResult{}, err
}
return result, nil
}
func (g *Generator) ready() error {
if g == nil {
return errors.New("generator is nil")
}
if g.initErr != nil {
return g.initErr
}
return nil
}
func (g *Generator) renderStoryPrompt(templateName string, entries []WordEntry) (string, error) {
genre := resolveGenre(g.theme, g.genres)
data := map[string]any{
"Language": g.language,
"Script": g.script,
"Genre": genre,
"Words": buildWordList(entries, ""),
"StoryBibleSeparator": storyBibleSeparator,
"StoryTitleSeparator": storyTitleSeparator,
"StoryPanelSeparator": storyPanelSeparator,
}
systemPrompt, err := g.prompts.RenderPrompt(storySystemPromptTemplate, map[string]any{
"Language": g.language,
"Script": g.script,
})
if err != nil {
return "", err
}
userPrompt, err := g.prompts.RenderPrompt(templateName, data)
if err != nil {
return "", err
}
return systemPrompt + "\n\n" + userPrompt, nil
}
func validateGeneratedResult(result GenerateResult, script string) error {
if err := validateTextScript("story text", result.StoryText, script); err != nil {
return err
}
if err := validateNoPromptLeakage("story text", result.StoryText); err != nil {
return err
}
if err := validateTextScript("character bible", result.Bible, script); err != nil {
return err
}
if err := validateNoPromptLeakage("character bible", result.Bible); err != nil {
return err
}
if err := validateTextScript("comic title", result.Title, script); err != nil {
return err
}
if err := validateNoPromptLeakage("comic title", result.Title); err != nil {
return err
}
for pageIdx, page := range result.PanelScript {
for panelIdx, panel := range page {
if err := validateTextScript(fmt.Sprintf("panel script P%d-%c", pageIdx+1, 'A'+panelIdx), panel, script); err != nil {
return err
}
if err := validateNoPromptLeakage(fmt.Sprintf("panel script P%d-%c", pageIdx+1, 'A'+panelIdx), panel); err != nil {
return err
}
}
}
return nil
}
|
