build.py

import json
import os
import inky

# Read the source template
with open("src/emails/welcome.inky") as f:
    template = f.read()

os.makedirs("dist", exist_ok=True)

# Build without data merge (template tags pass through)
html = inky.transform_inline(template)
with open("dist/welcome.html", "w") as f:
    f.write(html)
print("built dist/welcome.html")

# Build with data merge
with open("data/welcome.json") as f:
    data = f.read()
merged = inky.transform_with_data(template, data)
with open("dist/welcome-merged.html", "w") as f:
    f.write(merged)
print("built dist/welcome-merged.html")

# Generate plain text
text = inky.to_plain_text(merged)
with open("dist/welcome.txt", "w") as f:
    f.write(text)
print("built dist/welcome.txt")

# Validate
diagnostics = json.loads(inky.validate(template))
if diagnostics:
    print("\nvalidation warnings:")
    for d in diagnostics:
        print(f"  [{d['severity']}] {d['rule']}: {d['message']}")
else:
    print("\nno validation issues found")